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9-3 Angles of Elevation and Depression

9-3 Angles of Elevation and Depression. Two Key Terms. Angle of Depression and Angle of Elevation are Equal. Vocabulary. Horizontal Line. Angle of Depression. Angle of Elevation. Horizontal Line. #1 Identifying Angles of Elevation and Depression. #2 Real-World Connection.

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9-3 Angles of Elevation and Depression

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  1. 9-3Angles of Elevation and Depression Two Key Terms

  2. Angle of Depression and Angle of Elevation are Equal Vocabulary Horizontal Line Angle of Depression Angle of Elevation Horizontal Line

  3. #1 Identifying Angles of Elevation and Depression

  4. #2 Real-World Connection • You sight a rock climber on a cliff at a 32o angle of elevation. The horizontal ground distance to the cliff is 1000 ft. Find the line of sight distance to the rock climber. x 1000 ft

  5. #3 Real-World Connection • An airplane pilots sights a life raft at a 26o angle of depression. The airplane’s altitude is 3 km. What is the airplane’s surface distance d from the raft? 3 km d

  6. Practice Time • Try some on the angles of Elevation and Depression worksheet.

  7. Solving Right Triangles • Determine all six parts, if you know any of the following • Two side lengths • One side length and one acute angle measure • One side length and one trigonometric ratio

  8. Solve the resulting triangle • A ladybug is 15 feet from the base of a tree, the angle from the ladybug to the top of the tree is 22 degrees. Find the height of the tree to the nearest foot. Work on next slide.

  9. Classwork/homework

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