Trigonometry — practice questions, page 4
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Two observers A and B stand 1 km apart on a level road. A plane directly above the road between…From a point A, the angle of elevation of the top of a tower is α with tan α = 3/4. Walking 70 m…From the top of a tower h m high, the angles of depression of two objects in line with the foot,…A 15 m ladder just reaches the top of a vertical wall. The ladder makes an angle of 60° with the…From a point P, 60 m from the foot of a tower, its top is seen at an elevation of 45°. If the…Two vertical poles 20 m and 80 m tall stand on level ground. The lines joining the top of each…A man at the top of a tower watches a car coming straight towards the tower at a steady speed. The…A 1.2 m tall girl sees a balloon drifting horizontally at a height of 88.2 m above the ground. Its…A tower stands on level ground. From A, due south of it, the angle of elevation of the top is 30°;…From a point A on level ground, the top of a tower is seen at 45°. Walking 20 m up a slope…The angle of elevation of the top of the taller of two towers from the foot of the shorter is 60°,…From a point A on the ground, the angle of elevation of the top of a tower is 60°. From B, 10 m…A spherical balloon of radius r subtends an angle α at an observer's eye, and the angle of…From the top of a 100 m lighthouse, the angle of depression of a ship sailing straight towards it…
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