This document provides instructions for using trigonometric functions (sine, cosine, tangent) to solve for unknown sides of a right triangle. It gives an example triangle with a hypotenuse of 9 meters and an angle of 35 degrees. It uses sine to solve for side CB (5.16 m), cosine to solve for side AC (7.37 m), and tangent to solve for the final angle (55 degrees).

2. Remember:
SOH-CAH-TOA

3. So if
sin = opposite/hypotenuse
35 =CB
sin 9
rearrange the equation:
(sin 35) × 9 = CB
Using your calculator:
5.16 m = CB

4. So if
cos = adjacent/hypotenuse
AC
cos 35 = 9
rearrange the equation:
(cos 35) × 9 = AC
Using your calculator:
7.37 m = AC

6. So if
tan = opposite/adjacent
y = AC
tan BC
y = 7.37
tan 5.16
y = 55o