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OpenStudy (anonymous):
1. The angle of elevation from the top of the cliff to the top of the second cliff 290 ft. away is 68° , while the angle of depression from the top of the the first cliff to the bottom of the second cliff is 63° . Find the height of the second cliff. 2. An airplane is flying a straight course at 300 km/h. If it maintains a vertical distance of 5 km above a level ground, what will be its angle of elevation 2 min. after it passes directly above a point on the ground?
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hartnn (hartnn):
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