Question

An angle measures 7/9pi radians. What is the degree measure of the angle?
A. 140°
B. 280°
C. 439.6°

Answer 1

2pirad=360 deg
so
xrad/2pi=ydeg/360
times both sides by 360 to solve for ydeg
180xrad/pi=ydeg
so

7/9pi rad
180(7/9pi)/pi=ydeg
140=ydeg

140 deg

A is answer

Answer 2

Answer: 140

Step-by-step explanation:

on edge for me it was option B, but make sure the answer would be 140