Question

The value of $\cos 90°$

Answer 1

Value of $\cos 90°$ .

Trigonometric functions are real functions that connect a right-angled triangle's angle to ratios of two side lengths.

A trigonometric ratio of $\mathrm{cosec}$ is defined as $\cos \theta =\frac{\mathrm{adjecent}\mathrm{side}}{\mathrm{hypotenuse}}$

From the Table of trigonometric ratios, the exact value is $\cos 90°=0$.

Hence,the exact value is $\cos 90°=0$ .