Learning Objectives

By the end of this section, you will be able to:

• Use right triangles to evaluate trigonometric functions.
• Find function values for [latex]30^\circ \left(\frac{\pi }{6}\right)[/latex], [latex]45^\circ \left(\frac{\pi }{4}\right)[/latex], and [latex]60^\circ \left(\frac{\pi }{3}\right)[/latex].
• Use right triangle trigonometry to solve applied problems.