### Home > A2C > Chapter Ch10 > 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°