
Home > A2C > Chapter 10 > Lesson 10.1.1 > Problem 10-15
10-15.
Remember the angles from special right triangles.
30° and ?
120° and ?
Simplify the equation first.
This is not one of the special angles.
Use a calculator to find one answer.
Looking at a unit circle may help you find the other answer.
35.26°, 144.74°, 215.26° and 324.76°