8.5 Angles of Elevation and Depression - Poudre...
Transcript of 8.5 Angles of Elevation and Depression - Poudre...
8.5 Angles of Elevation and Depression
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8.5 Angles of Elevation and Depression
Objective: Use angles of elevation and depression to solve problems.
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Line of
sight
Angle of elevation
Object
Vertical heights can sometimes be measured using either the angle of elevation or the angle of depression.
Horizontal
Line of sight
Angle of depression
Object
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Example #3:
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25o100 ft
tan 25o = 100 xx =
x ≈ 214.45 feet
100tan 25o
x
Example #4: A ship, offshore from a vertical cliff known to be 100 feet in height, takes a sighting of the top of the cliff. If the angle of elevation is found to be 25o, how far offshore is the ship?
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Homework: page 447
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