What is the reference angle?

Likewise, what is reference angle and examples?

Finding Reference Angles Example 1: Find the reference angle for 150 degrees. 180 - 150 = 30 degrees. The reference angle is 30 degrees. If the terminal side of the angle is in the 3rd quadrant, we take 180 degrees and subtract it from the angle measure. 360 - 300 = 60 degrees.

Additionally, what is the reference angle of 210? 210 degrees is 30 degrees past 180, which means the reference angle is 30 degrees. Example: If we were asked to calculate the reference angle for 330 degrees, we would first sketch it. Next, we would see that it is 30 degrees from 360 degrees, which is the smallest angle to the x-axis and therefore the reference angle.

Also to know is, what is the reference angle of 90 degrees?

Reference angle for 90°: 90° (π / 2)

Can reference angles be negative?

It is always positive Regardless of which quadrant we are in, the reference angle is always made positive. Drag the point clockwise to make negative angles, and note how the reference angle remains positive.