Question

What is the angle of rotation counterclockwise about the spinner’s center that maps label j to label A?

A. 72°

B. 288°

C. 324°

D. 36°

Answer 1

C. 324°

Explanation:

We are given that,

The spinner is rotated 180° counter-clockwise about the center and maps J to A.

Since there are 10 sections of the spinner.

So, the angle by each section =
`(360)/(10)` = 36°

That is, the angle which maps J to A clockwise is 36°

Then, the angle which maps J to A counter-clockwise = 360° - 36° = 324°

Thus, option C is correct.