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Published byRaina Keathley Modified over 2 years ago

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Trigonometry Ratios

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

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

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

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

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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

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

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

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