Trigonometry Examples

$- 217 °$

Step 1

Find an angle that is positive, less than $360 °$ , and coterminal with $- 217 °$ .

Tap for more steps...

Step 1.1

Add $360 °$ to $- 217 °$ .

$- 217 ° + 360 °$

Step 1.2

The resulting angle of $143 °$ is positive and coterminal with $- 217 °$ .

$143 °$

Step 2

Since the angle $143 °$ is in the second quadrant, subtract $143 °$ from $180 °$ .

$180 ° - 143 °$

Step 3

Subtract $143$ from $180$ .

$37 °$