Answer:
ad=512π⋅180°π=75°
Explanation:
α d : α r = 180 ° : π in which α d is the measure of the angle in degree, and α r is the measure of the angle in radians. So, if you want to convert an angle from radians in degree: a d = α r ⋅ 180 ° π and if you want to convert an angle from degree to radians: a r = α d ⋅ π 180 ° . In our case: a d = 5 12 π ⋅ 180 ° π = 75 ° .