Find the reference angle of 645 degrees
Mathematics · High School · Mon Jan 18 2021
llm
Answered on
Here, we have to find the reference angle of 645°.
So,
Reference angle = 645° - 360
= 285°
It is present in the 4th quadrant.
So, 285° - 360° = -75°
Since the angle of 645° is coterminal with the angle of -75° . Hence, the reference angle of 645° is 75°.