xo=π180× x radian and x radian=180π× degree
True
First we will express a known angle in degree and radian and equate both. For this you can consider any angles whose degree and radian measurements are known. For example, right-angle is 90o and π2 radian
⇒90o=π2 radian
→1o=π180 radian
⇒xo=x×π180 radian.
To get the next relation,
π2 radian = 90o
1radian=180oπ
x radian = 180π×x degree