Question

What is the reference angle for 120ﾟ

Answer 1

60 degrees

Explanation:

Since the angle 120° is in the second quadrant, the reference angle formula is Ar=180°−Ac A r = 180 ° - A c . The reference angle is Ar=60° A r = 60 ° .

Answer 2

60° is the reference angle for 120°.

Explanation:

For an angle, lets say ∅, which lies in any of the four quadrants, an acute angle which can be formed with its terminal side and the x axis is known as the reference angle.

So for an angle of 120 degrees, if we draw it on a graph, the acute angle which is made with the x axis will be 60° (180° - 120° = 60°).