Practice Heights And Distances (9.1) - Some Applications of Trigonometry

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9 questions

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Exercise
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the angle of elevation?
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Think about looking up.
Question 2.
Define the line of sight.
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It relates to the observer's perspective.
3Question 3.
What is the line of sight?
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Where do you draw it from?
4Question 4.
True or False: The angle of elevation is always less than 90°.
- True
- False
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Recall the definition of elevation.
Question 5.
A bird is 60 m above the ground. An observer is 80 m away from the tree at a height of 2 m. If the bird flies directly up, what height does the observer see?
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Consider both heights together.
Question 6.
Two observers are standing on a balcony 20 m above ground. One sees a plane at an angle of elevation of 30°, the other at 45°. Find the distance to the plane above each observer.
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Apply trigonometric ratios carefully.

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