Question

What is the measure of ∅?

A. 2.5 π radians
B. 2.5 radians
C. 4 radians
D. 5 radians​

Answer 1

C. 4 radians

Explanation:

`20=(\pi (Ctrl.Angle)(5))/(180)`

Ctrl Angle = ∅

∅ =
`((20)(180))/(5\pi ) =(3600)/(5\pi ) =(720)/(\pi )`

in radians:

∅ =
`(720)/(180) =4`

Hope this helps