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OpenStudy (anonymous):
A vertical pole PQ stands at the top of a hill with slope 1:8. The angle of elevation of the top of the pole from A is 20. When a person walks 10m up the hill to a point R, the angle of elevation becomes 30. (a) Find the inclination of AQ with the horizontal. (b) Find the lengths of PR and AP. (c) Find the height of the pole.
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OpenStudy (anonymous):
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