In a right triangle, one angle measures {eq}x {/eq} degrees where {eq}\sin x=\frac{5}{8} {/eq}. What is the value of {eq}\cos \left( 90{}^\circ -x \right) {/eq} ? The Difference Identity for Cosine: In trigonometry, an ident...
What is the y-value of cos(x) when x=90∘? Trigonometry: Trigonometry is a branch of mathematics that deals with the triangle-based problem. In this mathematics, we learn the relationship between angle and sides of the triangle. It also helps to study the property of the different...
The correct Answer is:B To find the value of cos36∘, we can follow these steps: Step 1: Find sin18∘ Let x=18∘. We know that 5x=90∘. We can express 5x as 2x+3x. Step 2: Use the sine identity Using the identity sin(90∘−θ)=cos(θ), we have:sin2x=sin(90...
What is the value of[tan(90−θ)+sec(90−θ)−1][tan(90−θ)−sec(90−θ)+1]? View Solution What is the value of[1−tan(90−θ)+sec(90−θ)]/[tan(90−θ)+sec(90−θ)+1]? View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Sol...
Trigonometry is the branch of mathematics that deals with the measurement of angles and the ratio of sides of a right-angled triangle. To know more about trigonometric ratios, formula, applications, visit Cuemath
Sine function is a trigonometric function that is equal to the ratio of perpendicular and hypotenuse of a right triangle. Learn sine function definition, formula, properties, values for different angles, at BYJU'S.
What is θ if o=10 and a=8? Trigonometric Ratios: The trigonometric ratio is used in many places where we have to find the length of some side of the triangle or the sides of the polygon. The right-angle triangle is to be given else the sine or cosine rule is to be used. Answe...
Geometry is a branch of mathematics that primarily deals with the shapes and sizes of objects, their relative position, and the properties of space.
百度试题 结果1 题目What is the third term in the expansion of (cos ? A: 270 x B: 60 x C: 90 x D: 90 x 相关知识点: 试题来源: 解析 D None 反馈 收藏
cos _θ_ = _x_ And consequently: tan _θ_ = _y_ / _x_ What Is the Unit Circle? A "unit" circle has a radius of 1. In other words, the distance from the center of the circle to any part of the edge is always 1. The unit of measuremen...