Right Triangle Trigonometry
Grade 9•45 minutes•Australian Curriculum V9 Year 10: Students apply Pythagoras’ theorem and trigonometry to solve practical problems involving right-angled triangles.
Learning Objective
I can solve practical problems involving right-angled triangles by applying trigonometric ratios and drawing my own diagrams when necessary.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. Define the terms "angle of elevation" and "angle of depression" in your own words, and explain the relationship between them.
2. A surveyor stands 50 meters from the base of a building. The angle of elevation to the top of the building is 58°. Calculate the height of the building.
3. From the top of a cliff 80 meters high, the angle of depression to a boat at sea is 25°. How far is the boat from the base of the cliff?
...and 9 more questions
Educational Video
Trigonometry - Applications
Kevin Dorey