Question

trigonometric function of 90degree​

Answer 1

Step-by-step explanation:

To define the cosine function of an acute angle, consider a right-angled triangle provided with the angle of interest and the sides of a triangle. The three sides of the triangle are defined as follows: The opposite side is a side which is opposite to the angle of interest. please make my answer to brainlist

Answer 2

Answer:

All triangles have 3 angles that add to 180 degrees. Therefore, if one angle is 90 degrees we can figure out Sin Theta = Cos (90 - Theta) and Cos Theta = Sin (90 - Theta).

Step-by-step explanation:

All you need to know is sin and cos for 90 degrees, the rest can be derived by formula.

Explanation:

Sin(90) = 1

Cos(90) = 0

Tan = sin/cos = undefined

Cot = cos/sin = 0

Sec = 1/cos = undefined

Csc = 1/sin = 1

hope that helped