LEARNING OBJECTIVE: To establish how to use trigonometry rules when a question uses angles of depression or elevation
SUCCESS CRITERIA: You will be able to use trigonometry to solve angles of elevation and depression questions
GOLDEN RULE: DRAW A DIAGRAM
STARTER: Can you use trigonometry to work out the height of the lighthouse and the tree in these questions (screen 5 from this lesson)
LESSON: Angle of Elevation and Depression Video.
QUESTION: Owen sees a plane up in the sky. He knows it is at a horizontal distance of 45 km and the angle of elevation is 33°. How high is the aircraft.
Work through Ex 12M page 296.
EXTENSION: Look at Bearings – Ex 12N page 297
PLENARY: Checking answers, exam questions
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