# Find the Reference Angle 900 degrees

Find an angle that is positive, less than , and coterminal with .
Subtract from .
The resulting angle of is positive and coterminal with but isn’t less than . Repeat the step.
Subtract from .
The resulting angle of is positive, less than , and coterminal with .
Since the angle is in the second quadrant, subtract from .
Subtract from .
Find the Reference Angle 900 degrees