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Published byRolf Henry Modified over 8 years ago
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Precalculus 4.8 Applications and Models Bellwork 1.Use your unit circle to find the possible values of 2.Use a calculator to find the value. arcsin ¼ arctan -9.65
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4.8 Applications and Models Objectives: Use right triangles to solve real-life problems. Use directional bearings to solve real-life problems.
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Precalculus 4.8 Applications and Models 3 Terminology Angle of elevation – angle from the horizontal upward to an object. Angle of depression – angle from the horizontal downward to an object. Horizontal Observer Angle of elevation Object Horizontal Observer Angle of depression Object
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·Solve the missing sides of the triangle Precalculus 4.8 Applications and Models 4 25° 5 x y
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Example 150 feet 60 0
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Precalculus 4.8 Applications and Models 6 30 feet 10 feet Example Find all the missing sides and angles of the triangle
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