Chapter 13.5, Problem 39PPS

To determine

To Solve : The given value is $3\cos \theta -\cos \theta =2$

Answer to Problem 39PPS

  $\theta =2n\pi ,n\in z$

Explanation of Solution

Given information :

We know that, the given equation is $3\cos \theta -\cos \theta =2$

Formula Used :

  $\cos \theta =1at\theta =2n\pi ,n\in z$

Calculation :

The given equation is

  $\begin{array}{l}3\cos \theta -\cos \theta =2\\ 2\cos \theta =2\\ \cos \theta =1\\ \theta =2n\pi ,n\in z\end{array}$