Chapter SH, Problem 13.7EP

To determine

To prove:

The each expression into trigonometric form

Explanation of Solution

Given:

  $\sin \theta \cot \theta =\cos \theta$

Concept used:

Trigonometric ratios: - Atrigonometric ratio are the ratios between edges of a right triangle.

Calculation:

Trigonometric ratio is

  $\begin{array}{l}\sin \theta \cot \theta =\cos \theta \\ \frac{\cos \theta }{\sin \theta }\times \sin \theta =\cos \theta \\ \cos \theta =\cos \theta \end{array}$