Practice Summary (9.2) - Some Applications of Trigonometry

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8 questions

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6 sample questions

Question 1.
Define the line of sight.
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Think about the view you get when you look at something.
Question 2.
What do you call the angle formed when looking up towards an object?
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Remember it relies on looking up!
3Question 3.
What is the angle of elevation?
- Angle to the object viewed below horizontal
- Angle to the object viewed above horizontal
- Neither
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Think about the concepts of raising your head to look at objects.
4Question 4.
True or False: The line of sight can create both angles of elevation and depression.
- True
- False
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Recall the definitions of both angles!
Question 5.
A lighthouse is 50 feet tall. If you stand 100 feet from the base and the angle of elevation to the top of the lighthouse is 30 degrees, what is the height of the lighthouse?
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Use the tangent ratio correctly!
Question 6.
A cable car is suspended above a valley. If the angle of depression to the base of the valley is 45 degrees and is 80 meters away horizontally, what is the height of the cable car?
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Don't forget that tan(45°) equals 1!

4 more questions in this section. Enroll free to practise them all.