Question

What are they asking in this question? Like what do they want me to understand?

Answer 1

Given:

Convert radian to degree

$=\frac{180}{\pi}$

Find-:

What is always happen with pis

Explanation-:

If the angle is radian

Let angle is:

$=x\pi$

So,

Angle in degree is:

$\begin{gathered} =x\pi\times\frac{180}{\pi} \\ \\ =180x \end{gathered}$

So, they will cancel out.