CCSS Honors 9.3 Example 1
- Walch Education
Without using a calculator, evaluate .
- Determine the quadrant that contains the terminal side of the angle.
- Sketch the location of the coterminal angle on a unit circle.
- Using your sketch from step 2, determine the reference angle that applies to this situation.
- Evaluate the sine of the reference angle, using your knowledge of special angles.
- Use the quadrant information from step 2 to modify the sign of your result as necessary.