But in this video you will come to know the reason behind it. sin 0 sin 30 sin 45 sin 60 sin 90 Note down the pattern from sin 0 to sin 90 : Hence, we can now fill all sin values in the table. [1] This formula is given in his treatise titled Mahabhaskariya. Accepted Answer. In mathematics, Niven's theorem, named after Ivan Niven, states that the only rational values of θ in the interval 0° ≤ θ ≤ 90° for which the sine of θ degrees is also a rational number are: =, =, = In radians, one would require that 0 ≤ x ≤ π /2, that x/ π be rational, and that sin x be rational. What are the relations among all the trigonometrical ratios of (180° - θ)? In trigonometrical ratios of angles (180° - θ) we will find the relation between all six trigonometrical ratios. For those comfortable in "Math Speak", the domain and range of Sine is as follows. Evaluate each of the following. In geometric terms, the sine of an angle returns the ratio of a right triangle's opposite side over its hypotenuse. 8414709848 in radian. Cos 60° = sin 30°. Please support us at:https://www. Trigonometric ratios of 90 degree plus theta are given below. Cos 0° = Sin 90°. Here, we represent the sum of sines as: S = sin 2°+sin 4°+. b = 2. Lượng giác Ví dụ. cos 135°=-1/√2. Consider that −90° corresponds to 270° (the minus sign is to turn clockwise instead of counter-clockwise): so: sin( − 90°) = sin(270°) = −1. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Tìm Giá Trị Chính Xác sin (90 độ ) sin(90°) sin ( 90 °) Giá trị chính xác của sin(90°) sin ( 90 °) là 1 1. Cùng Top lời giải ôn tập lại kiến thức về lượng giác nhé. How do you calculate sin theta? The sine of an angle of a right-angled triangle is the ratio of its perpendicular (that is opposite to the angle) to the hypotenuse. Since sine function is positive in the first quadrant, thus sin 15° value = (√6 - √2)/4 or 0. so we will look at the Sine Function and then Inverse Sine to learn what it is all about. Natural Language. We now find the sine of 36°, by first finding the cos of 36°. Tan 90° = Sin 90 0 / Cos90° From the trigonometric table, we know, Sin 90° = 1. I think it's because both trigonometric ratios use the hypotenuse plus either the adjacent or opposite side. Q&A for work. Domain of Sine = all real numbers; Range of Sine = {-1 ≤ y ≤ 1}; The sine of an angle has a range of values from -1 to 1 inclusive. Find out the relation between sine, cosine and tangent functions, and the trigonometry table for angles in degrees and radians. sin(90°) cos(90°) sin ( 90 °) cos ( 90 °) The exact value of cos(90°) cos ( 90 °) is 0 0. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. 893996663600558 Sine, in mathematics, is a trigonometric function of an. 810°, calculate sin 810° as sin (810 Mod 360)° = sine of 90°, or look it. Tan (x) = Sin (x) ÷ Cos (x), so tan values can be calculated by simply dividing sin by cos. user289143 user289143. Sin 0° = Cos 90°=0. Since the sine function is a periodic function, we can represent sin 0° as, sin 0 degrees = sin (0° + n × 360°), n ∈ Z. Since sine function is positive in the first quadrant, thus sin 40° value = 0. Because O and H become closer and closer to the same value. Follow answered Apr 8, 2019 at 14:08. cot (90° + θ) = - tan θ. You should try to remember sin. One of the properties of inverse functions is that if a point (a, b) is on the graph of f, the point (b, a) is on the graph of its inverse. Free trigonometric identity calculator - verify trigonometric identities step-by-step. 삼각함수 특수각 Cos 정리 Cos 30︒, 45︒, 60︒일 때의 값이다. sin problema de (boot ramdisk)volumen - + encendido asta que veas que avanza al 30%. 13th Edition. See the solution steps, quiz and examples of trigonometry problems similar to this one. See below. This is why I took it to be 0, because we can’t define it. x→−3lim x2 + 2x − 3x2 − 9. Calculate sin(90)° Determine quadrant: Since 0 ≤ 90 ≤ 90 degrees it is in Quadrant I sin, cos and tan are positive. They are very similar functions. sin90∘ = 1 sin 90 ∘ = 1. Hence, sin 120 degree = cos 30°. Free math problem solver answers your algebra, geometry, trigonometry. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. [1] This formula is given in his treatise titled Mahabhaskariya. sin90°为什么等于1？最难的就是怎么样更通俗一些, 视频播放量 28753、弹幕量 137、点赞数 511、投硬币枚数 107、收藏人数 166、转发人数 87, 视频作者 三乐大掌柜, 作者简介 聊天，相关视频：特殊角的三角函数，特殊角的三角值也太难记了吧？. a useful "identity". 9k points) trigonometry; class-10; Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Using the Sine Calculator. The sine and cosine functions, like all trig functions, evaluate differently depending on the units on q, such as degrees, radians, or grads. a year ago. The values of trigonometric numbers can be derived through a combination of methods. Once defined on the unit. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Since the cosine function is a periodic function, we can represent cos 90° as, cos 90 degrees = cos (90° + n × 360°), n ∈ Z. In mathematics, it is written as sin ( 90 °) according to sexagesimal system. Let us see, how the. tan90° is undefined because it is computed as sin90°/cos90°, where cos90° is 0, and division by zero is undefined. For the sine of 90 degrees we use the abbreviation sin for the trigonometric function together with the degree symbol °, and write it as sin 90°. Solve your math problems using our free math solver with step-by-step solutions. See the example below. Recalling the right-triangle definitions of sine and cosine, it follows that. For sin 15 degrees, the angle 15° lies between 0° and 90° (First Quadrant ). ⇒ cot 90° = cot 270° = cot 450°, and so on. Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. Learn how to find the value of sin 90 degrees using trigonometric functions, unit circle and identities. Gostaríamos de exibir a descriçãoaqui, mas o site que você está não nos permite. Compare this to cosine where cosine(90°) makes no sense, because there are two "adjacent" sides. Cùng Top lời giải ôn tập lại kiến thức về lượng giác nhé. There is a simple method by means of which we can calculate the value of sine ratios for all the degrees. a/sin (A) = k. As per the wikipedia's Radian to Degree conversion formula, Angle in Radian = Angle in Degree * Math. ⇒ sin 45° = sin 405° = sin 765. Note: We could also find the sine of 15 degrees using sine (45° − 30°). The value of the sine function is maximum for sin 30 and sin 60, albeit in the complementary direction of the Y-axis. We have learnt that sin 90 = 1, And cos 90 = 0 sin (90-x)-cos x. Find an answer to your question Sin square 90 -theta. For sin 9 degrees, the angle 9° lies between 0° and 90° (First Quadrant ). For sin 28 degrees, the angle 28° lies between 0° and 90° (First Quadrant ). You should try to remember sin. tan35 C = − + − + L ờ i gi ả i a) o o 2 2 2 o sin90 cos90 cos180 A a b c = + + 2 2 2 2 2. Calculate the value of the sin of 90 radians To enter an angle in degrees, enter sin(90) or sin(90DEG) sin(90 radians) = 0. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. In trigonometry, the law of sines, sine law, sine formula, or sine rule is an equation relating the lengths of the sides of any triangle to the sines of its angles. Similarly, the values of sin 0, sin 45, and sin 90 are located equidistantly on the Y-axis. The values of trigonometric numbers can be derived through a combination of methods. Answer link. Then it would be more natural to proceed along the lines of:. Free trigonometric simplification calculator - Simplify trigonometric expressions to their simplest form step-by-step. Assertion and Reason Questions for Class 10 Maths Chapter 8 Introduction to Trigonometry Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). For example, the sine of PI ()/6 radians (30°) returns the ratio 0. The sin value when angle of a right triangle equals to 90 ° is called sine of angle 90 degrees. Also, 90° - θ comes in the first quadrat. tan 90 ise sin 90/ cos 90 işlemi. I note that this source says "The sincos_ps is nice because you get magically a free sine for each cosine you compute, so it is almost as fast as the sin_ps and the cos_ps. The values for Cos and Sin can be derived from each other as: Sin 0 = Cos 90. There is a simple method by means of which we can calculate the value of sine ratios for all the degrees. The value of sin 30 degrees is 1/2. The graph of y=sin (x) is like a wave that forever oscillates between -1 and 1, in a shape that repeats itself every 2π units. Free trigonometry calculator - calculate trignometric equations, prove identities and evaluate functions step-by-step. csc (90° + θ) = sec θ. sin 135 ∘ = sin ( 90 ∘ + 45 ∘) sin ( 90 ∘ + 45 ∘) = cos 45 ∘. If you think about it in terms of a right triangle, you can have angles and opposite sides, let C be the right angle and c be the hypotenuse. Calculate sin(90)° Determine quadrant: Since 0 ≤ 90 ≤ 90 degrees it is in Quadrant I sin, cos and tan are positive. Because O and H become closer and closer to the same value. Tan 30° =1/√3. Using the trigonometry formula, sin (90 + a) = cos a, we can find the sin 120 value. = 1 + 1 + 2 cos θ sin θ ( 1 + cos θ) = 2 + 2 cos θ sin θ ( 1 + cos θ) = 2 ( 1 + cos θ) sin θ ( 1 + cos θ) = Argument for \require is not a valid package name Argument for \require. Prove that cos 90 ° - x = sin x and sin 90 ° - x = cos x. Since sine function is positive in the second quadrant, thus sin 150° value = 1/2 or 0. Simultaneous equation. không có(90∘– θ. Consider a circle of radius 1 centered on the origin. These problems may include trigonometric ratios (sin, cos, tan, sec, cosec and cot), Pythagorean identities, product identities, etc. Calculator Use. Is this what you meant? (Sin30+sin60+sin90) / (cos30+cos60+cos90). The sine of an angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to (which divided by) the length of the longest side of the triangle (thatis called the hypotenuse). sin(a − b) s i n ( a − b) is the way to go, then use your knowledge of cos a cos a and sin a sin a when a = 90 a = 90. In this video you will see a very basic concept of trigonometry. Thus, sin 180° value = 0. 9397) of unit circle and r. See the solution steps, quiz and examples of trigonometry problems similar to this one. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths. a year ago. sin (90 - a) = sin 90. Then, write the equation in a standard form, and isolate the variable using algebraic manipulation to solve for the variable. Underneath the calculator, the six most popular trig functions will appear - three basic ones: sine, cosine, and tangent, and their reciprocals: cosecant, secant, and cotangent. We can think of the radius as the hypotenuse of a right triangle: Figure 1. the SSG has released the revised result for the exam held on the 26th and 27th of October 2023. The value of sine of angle one hundred thirty five degrees is not known to us but it can be evaluated easily by the sine of ninety degrees plus angle theta formula. Solution: 210° = (180 + 30)° so this is in the 3rd quadrant and 30° is the related angle. Cos 60° = sin 30°. Thus, sec 90° value = undefined (∞) Since the secant function is a periodic function, we can represent sec 90° as, sec 90 degrees = sec (90° + n × 360°), n ∈ Z. Penjawab soal matematika gratis menjawab soal pekerjaan rumah aljabar, geometri, trigonometri, kalkulus, dan statistik dengan penjelasan langkah-demi-langkah, seperti tutor matematika. Evaluate sin 90 ∘ cos 45 ∘ + 1 cos e c 30 ∘. Recalling the right-triangle definitions of sine and cosine, it follows that. Something went wrong. How to plot the sin graph. Sine and cosine are written using functional notation with the abbreviations sin and cos. 3 Systems of Nonlinear Equations and Inequalities: Two Variables; 9. Sine and cosine are written using functional notation with the abbreviations sin and cos. kh on November 28, 2023: "初心者でも 毎月最低50万円 稼げる副業を 案内いています。 今一番. Now that we have our unit circle labeled, we can learn how the \((x,y)\) coordinates relate to the arc length and angle. Hence sin 270 = sin (180 + 90) = - sin 90 = -1. Use our sin(x) calculator to find the exact value of sine of -90 degrees - sin(-90 °) - or the sine of any angle in degrees and in radians. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. NCERT CLASS 11 MATHS solutionsNCERT CLASS 12 MATHS solutionsBR MATHS CLASS has its own app now. Evaluate each of the following. Không có 90 ° = 1. (b) Both Continue reading Assertion and Reason Questions. and sin 90. Since sine function is positive in the first quadrant, thus sin 40° value = 0. Tips Belajar Matematika Sudut Istimewa. The expression contains a division by 0 0. I am unable to solve this problem. 6293 x 30. Apart from these three trigonometric ratios, we have another three ratios called csc, sec, and cot which are the reciprocals of sin, cos, and tan respectively. ∫ 01 xe−x2dx. That means, all trigonometry ratios are positive. For sin 28 degrees, the angle 28° lies between 0° and 90° (First Quadrant ). So, sec (90° – θ) = cosec θ. sin 30 ° - sin 90 ° + 2 cos 0 ° tan 30 ° tan 60 °. Prove sin (90 A) = cos A Get the answer to this question and access a vast question bank that is tailored for students. Calculate sin(90)° Determine quadrant: Since 0 ≤ 90 ≤ 90 degrees it is in Quadrant I sin, cos and tan are positive. Where A is the side opposite of theta. Because the answer to this is sqrt3 which seems a lot nicer and more likely) sin30=1/2 sin60=sqrt (3)/2 sin90=1 cos30=sqrt3/2 cos60=1/2 cos90=0 Now, you have to follow the order of operations (BIDMAS): Brackets Indices Division Multiplication Addition Subtraction As you can see. In this tutorial you will learn how to find sin 90 degrees and why its value is 1. Well, technically we've only shown this for angles between 0 ∘ and 90 ∘. cos a - sin a cos 90. The trigonometric ratios are the ratios of two sides and Sine is a trigonometric ratio which is simply the ratio of. A shift of -90 degrees of sinx gives you cosx. Jun 30, 2016 · sin (90 - a) = sin 90. ∫ 01 xe−x2dx. There are a total of five major points that are plotted (sin 0, sin 30, sin 45, sin 60, and sin 90). You said: as 1 0 could be both positive and negative infinity. Method 2. The word itself comes from the Greek trigōnon (which means "triangle") and metron ("measure"). cos = xXXXXXXXXXsec = 1 cos ⇔ cos ≠ 0. Evaluate each of the following sin 30 ° sin 45 ° + tan 45 ° sec 60 °-sin 60 ° cot 45 °-cos 30 ° sin 90. What Are Sin Squared x Formulas? Using one of the trigonometric identities, we have sin 2 x + cos 2 x = 1. To define the sine function of an acute angle, start with the right-angled triangle ABC with the angle of interest and the sides of a triangle. 가끔 0도, 90도를 말하기도 합니다만, 보통 30도 60도 45도를 주로 말합니다. Sin 30 0 =Cos 60 0 =½. Linear equation. 9396926207859083 to get 1. ly/Instagram-CoLearnSekarang, yuk latihan soal ini!Tunjukkan bahwa: sin (90. cos (90° + θ) = - sin θ. The tan is equal to sin divided by cos. The SIN function returns the sine of an angle provided in radians. sec (90° - θ) = csc θ. The slope-intercept form is , where is the slope and is the y-intercept. NCERT CLASS 11 MATHS solutionsNCERT CLASS 12 MATHS solutionsBR MATHS CLASS has its own app now. Given the periodic property of sine of -90°, to determine the sine of an angle -360°, e. Also, the sin (B)=b/c and cos (B)=a/c. Keywords: Trigonometric Values of Special Angles. A ray comes in from the + x axis, makes an angle at the origin (measured counter-clockwise from that axis), and departs from the origin. meaning that the y-value of any point on the circumference of the unit circle is equal to sin (θ). (a) Since cosθ = 3/5 > 0 and cscθ =1/sinθ > 0 sinθ > 0. What is the value of sin (90)? - Quora. Use a calculator to find sin 39°: d/30 = 0. at 2π. The value you quoted for sin(90) is the value for sin(90 radians). Free trigonometric simplification calculator - Simplify trigonometric expressions to their simplest form step-by-step. 9396926207859083 to get 1. Let a rotating line OA rotates about O in the anti-clockwise direction, from initial position to ending position makes an angle ∠XOA = θ again the same rotating line rotates in the same direction and makes an angle ∠AOB =90. mutant fridge mayhem, abacus book pdf
sin -1 a = sin -1 [sin (A) * k]. . Sin90
The sine of an angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to (which divided by) the length of the longest side of the triangle (thatis called the hypotenuse). Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan). Sin of Sin Inverse. The value for sin 45 degrees and other trigonometry ratios for all the degrees 0°, 30°, 60°, 90°,180° are. Graph sin(90) Step 1. (Since you're working in degrees, that's very unlikely to be what you have done, through -- so if this part of the answer makes no sense to you, feel free to ignore it). In the same way, we can find the values for cos and tan ratios. ∫ 01 xe−x2dx. Now, subtract the angle theta from the right angle and it is written as $90^\circ-\theta$ mathematically. How do you find the trigonometric functions of any angle? What is the reference angle? How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle? What is the reference angle for #140^\circ#?. Sin (90° - θ) = Cos θ. The formula for converting degrees into radians is given as, Radians = Degrees × π 180∘ π 180 ∘. Sin of angle 90 degrees is the sin value when the angle of a right triangle equals 90 degrees. (get your calculator out and check them!). In summary, the conversation is discussing the trigonometric identities for sine and cosine, specifically focusing on the equations sin (90-theta) = cos theta and sin (90+theta) = cos theta. Underneath the calculator, the six most popular trig functions will appear - three basic ones: sine, cosine, and tangent, and their reciprocals: cosecant, secant, and cotangent. In Trigonometry, different types of problems can be solved using trigonometry formulas. This year, SSC completely changed. sind = lambda degrees: np. To use the tool to find the hyperbolic sine, enter the measurement of a hyperbolic angle and compute. As an example of a proof with a quite different flavor, suppose we have defined the sine and cosine by power series. And we're done! We've shown that sin ( θ) = cos ( 90 ∘ − θ). 8 Solving Systems with Cramer's Rule. Apart from these three trigonometric ratios, we have another three ratios called csc, sec, and cot which are the reciprocals of sin, cos, and tan respectively. Once defined on the unit. ISBN: 9781133382119. 542397, rounded. The basic trigonometric identity: sin2 θ+ cos2 θ = 1 sin 2 θ + cos 2 θ = 1. Evaluate: tan 2 30 ⋅ sin 30 + cos 60 ⋅ sin 2 90 ⋅ tan 2 60 − 2 tan 45 ⋅ cos 2 0 ⋅ sin 90. Inverse trigonometric functions are useful when trying to determine the remaining two angles of a right triangle when the lengths of the sides of the triangle are known. That means [cos(x) = sin(90 - x)]. Mark the angles. 893996663600558 Sine, in mathematics, is a trigonometric function of an. Or you can say, the Sine of angle α is equal to the ratio of the opposite side (perpendicular) and hypotenuse of a right-angled triangle. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Cos 60° = sin 30°. The value of sin 30 degrees is 1/2. sin 90∘ = cos 0∘ = 1 (complementary angles) Suggest Corrections. Angle - measurement of the angle; Once you're happy with the input, click the "Compute Hyperbolic Sine" button. How do you calculate sin theta? The sine of an angle of a right-angled triangle is the ratio of its perpendicular (that is opposite to the angle) to the hypotenuse. Aug 14, 2015 · Method 1: Using plots of sinx and cosx. cot 90 demek, cos 90/ sin90 olduğu için ve cos 90 değeri 0 olduğu için 0 değerini alır. Then it would be more natural to proceed along the lines of:. Note: Since, cosine is an even function, the value of cos (-90°) = cos (90. The value of the sine function is maximum for sin 30 and sin 60, albeit in the complementary direction of the Y-axis. And notice that it's 90 90 degrees. Test your knowledge on Value of sin 180. sin = o / h. (ii) When we have 90°, "sin" will become "cos". Visit BYJU'S to learn the trigonometry formulas, ratios, tables, functions and examples. Answer link. Put your understanding of this concept to test by answering a few MCQs. What is Sine in Mathematics? Sine, is a trigonometric function of an angle. Step 3: Square root each of the numbers. With the help of a unit circle drawn on the XY plane, we can find. Trigonometry is a branch of mathematics concerned with relationships between angles and ratios of lengths. Given that, The value sin90° = 1. A, B and C are angles. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Find out the relation. Since, sin (90 + A) = cos A, so Sin (90+30) = cos 30 Since, cos 30 = √3/2 Therefore, sin 120 = √3/2. dxd (x − 5)(3x2 − 2) Integration. Welcome to sin 90°, our post aboutthe sine of 90 degrees. cot (90° - θ) = tan θ. Solution: 210° = (180 + 30)° so this is in the 3rd quadrant and 30° is the related angle. If you a want to know how is sin(90∘) = 1 sin ( 90 ∘) = 1 from a triangle's point of view, well you can take any right angled triangle and fix the base length. It is well known that ∫ sin(x)= −cos(x)+C. See the example below. Q 4. Answer: We know the double angle formula of sin which is the formula of sin2x as 2sinxcosx. In Excel, the length of the opposite side (perpendicular side) will be calculated by the SIN formula:. The trigonometric expression sin ( 90 ∘ + θ) expresses the sine of sum of two angles. Sine is negative in the 4th qudrant, so sin (-30)° = -sin 30° = 1/2. Something went wrong. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. 삼각비에서 특수각이라함은 30도 60도 45도를 말합니다. La normativa contempla una serie de. A trigonometric table is a table that lists the values of the trigonometric functions for various standard angles such as 0°, 30°, 45°, 60°, and 90°. We have learnt that sin 90 = 1, And cos 90 = 0 sin (90-x)-cos x. We will get the Cos 90 value through the quadrant angle. You can also use lower case Greek letters. In the illustration below, sin (α) = a/c and sin (β) = b/c. Thus cos 90° value = 0. deg2rad (degrees)) print (sind (90)) # Output 1. Rearrange terms. Simultaneous equation. The circle looks like this: Fig 6. Recall that tan 30° = sin 30° / cos 30° = (1/2) / (√3/2) = 1/√3, as claimed. For example: If the value of sine 90 degree is 1, then the value of inverse sin 1 or sin-1 (1) will be equal to 90°. The value of sin pi can be derived from some other trigonometric angles and functions like sine and cosine functions from the trigonometry table. 삼각함수 특수각 Cos 정리 Cos 30︒, 45︒, 60︒일 때의 값이다. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Explanation: For sin 51 degrees, the angle 51° lies between 0° and 90° (First Quadrant ). The values of sine and cosine of 30, 45, and 60 degrees are derived by analysis of the 30-60-90 and 90-45-45 triangles. Solve your math problems using our free math solver with step-by-step solutions. The domain of the sine function is. ⇒ sin 180° = sin 540° = sin 900°, and so on. After that, you can start your calculations. Y = sin (X) returns the sine of the elements of X. Considering the above points, we have. Solve your math problems using our free math solver with step-by-step solutions. For sin 900°, the angle 900° > 360°. The Matrix, Inverse. Thus, tan 90° value = undefined (∞) Since the tangent function is a periodic function, we can represent tan 90° as, tan 90 degrees = tan (90° + n × 180°), n ∈ Z. . east cobb astros 15u