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Flip to reveal answersWhat is an angle of elevation?
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All 8 Flashcards — Elevation & depression
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Question
What is an angle of elevation?
Answer
The angle measured upward from the horizontal to a point above you.
Question
What is an angle of depression?
Answer
The angle measured downward from the horizontal to a point below you.
Question
Elevation/depression are measured from what?
Answer
The horizontal — never the vertical.
Question
How does depression relate to elevation?
Answer
The depression angle down to an object equals the elevation angle from the object back up (alternate angles).
Question
Which ratio is most common in these problems?
Answer
tan θ = height/horizontal distance (height opposite, distance adjacent).
Question
Tower height from 50 m away, elevation 30°?
Answer
h = 50 tan 30° ≈ 28.9 m.
Question
What if the angle is from a person's eye?
Answer
Add the eye height to the triangle's height for the true total.
Question
Two observers and an object form a non-right triangle — what do you use?
Answer
The sine or cosine rule.
Read the notes
Full study notes for Elevation & depression
Topic 3.3 hub
Bearings & elevation
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Math AA SL exam skills
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