3.3 Finding Missing Angles

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2.3 Finding Missing Angles

3.3 Finding Missing Angles

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You can find an angle in a right angle triangle by

using the inverse trigonometric ratio.

Inverse trigonometric

functions find angles

rather than a side

3.3 Finding Missing Angles

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Example 1. Find angle W.

3.3 Finding Missing Angles

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Example 2. Find angle S.

3.3 Finding Missing Angles

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Example 4. A 10-foot ladder leans against the side of a building with its base 4 ft. from the wall.

What angle, to the nearest degree, does the ladder make with the ground?

3.3 Finding Missing Angles

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Example 3. Find angle K.