Find the degree measure of the angle, the radian measure of which is: 2.5; п / 4; 10п.

In order to accomplish this task, we need to figure out what is called a radial degree. An angle of 1 radian is the central angle that rests on an arc of a circle the length of which is equal to the radius of the circle. Is the main formula for the formation of this angle:
п = 180 °. 1 = 180 ° / R, 1 ° = п / 180.
Based on this, we get:
2.5 * 57 = 142.5 °
п / 4 = 180 ° / 4 = 45 °
10п = 180 ° * 10 = 1800 °