Question

if sin a=1 then what is the value of cos a

Answer 1

sina=1
then a=90
therefore cos a=cos90=0

Answer 2

Answer:

The cos function is the ratio of the adjacent side and the hypotenuse. It helps us find the length of the sides of a triangle regardless of the given angle.

Step-by-step explanation:

The meaning of cos in mathematics refers to the cosine function, which we learn in the most important concept of geometry, i.e. in trigonometry. The cosine function is one of the three main functions of trigonometry. These three functions are also called trigonometric ratios, which are sine, cosine, and tangent.

The meaning of cos in trigonometry defines the cosine of an angle. This angle is an acute angle in a right triangle, which is considered to find the ratios. Therefore, the cosine of an angle in a right triangle is equal to the ratio of the adjacent side of this angle and the hypotenuse of the triangle.

Given sin a= 1

then we know that sin value 1 is 90

a = 90

so, cos a= cos 90

then cos 90 = 0

Hence cos a = 0

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