Find the Reference Angle -135 degrees

$- 135 °$

Find an angle that is positive, less than $360 °$ , and coterminal with $- 135 °$ .

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Add $360 °$ to $- 135 °$ .

$- 135 ° + 360 °$

The resulting angle of $225 °$ is positive and coterminal with $- 135 °$ .

$225 °$

Since the angle $180 °$ is in the third quadrant, subtract $180 °$ from $225 °$ .

$225 ° - 180 °$

Subtract $180$ from $225$ .

$45 °$

Find the Reference Angle -135 degrees

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