Question

A searchlight rotates through one complete revolution every 36 seconds. How long does it take the light to rotate through 90°?

Answer 1

Answer: 1 second

1 full revolution=360

4seconds=360degrees

how many seconds are 90 degrees

4:360=x:90

4/360=x/90

simplify

1/90=x/90

1=x

the answer is 1 second

Explanation:

Hope this helps you!!!!!!!!! :D

Answer 2

9 seconds

360° can be divided by 9° into 4 parts. 36 divided by 4 is 9