Trigonometry Ratios

Example 1 Write the Trig Ratio for each of the following ( soh, cah, toa)

Example 2 Write each ratio as a fraction and decimal ( soh, cah, toa) change to B

Solving Right Triangles : Inverse Functions When you are finding an angle measurement, you must use… _________________________ keys (_________) inverse

Example 3 Find the acute angles: ****Write as a ratio FIRST**** Change to DEGREE in Calculator ( soh, cah, toa)

Example 4 Find all unknown measures: (find both acute angles and missing side. ) ( soh, cah, toa) Find angles: use inverse key _______________ Find : use Pythagorean Theorem

To completely solve a right triangle you must have: _________________ OR ______________________________________ 2 sides lengths One side length and one acute angle

Example 5 Find Steps: 1. 2. Set up: 3. Substitute: Solve for x 4.