Question

The question is in the image. Answer question 17 only.

Answer 1

Explanation

We want to convert the given problem below to degrees:

$\frac{\pi}{9}$

To determine the corresponding degree angle, we do this:

$multiply\text{ the angle\lparen in radians\rparen by }\frac{180}{\pi}$

So, we have the following:

$\frac{\pi}{9}\times\frac{180}{\pi}=20\degree$

Hence, the answer is 20°.