Find an unknown side length of a right triangle

1
EXAMPLE 3
Find an unknown side length of a right triangle
SOLUTION
Write an equation using a trigonometric function
that involves the ratio of x and 8. Solve the
equation for x.
Write trigonometric equation.
Substitute.
2
EXAMPLE 3
Find an unknown side length of a right triangle
Multiply each side by 8.
3
EXAMPLE 4
Use a calculator to solve a right triangle
SOLUTION
62º.
Write trigonometric equation.
Substitute.
4
EXAMPLE 4
Use a calculator to solve a right triangle
Solve for the variable.
15(tan 28º) a
Use a calculator.
5
for Examples 3 and 4
GUIDED PRACTICE
6
for Examples 3 and 4
GUIDED PRACTICE
7
for Examples 3 and 4
GUIDED PRACTICE
8
for Examples 3 and 4
GUIDED PRACTICE