Raymond B. answered 12/22/21
Math, microeconomics or criminal justice
30 and 60 degrees, or pi/6 and pi/3 radians
A = 2(90-A) = 180 - 2A
3A = 180
A = 180/3 = 60 degrees which is twice the complementary angle of 30 degrees
complementary angles sum to 90 degrees or pi/2 radians. If an angle is A, it's complement is 90-A. If an angle is 60, its complementary angle is 90-60 = 30 degrees.
(complementary is not complimentary, the 6th letter is different. An "e" and an "i" make the meaning very different)
60 degrees converts to radians by multiplying by pi/180. 60 x pi/180 = 60pi/180 = pi/3
30 degrees multiplied by pi/180 = 30pi/180 = pi/6