Created by StemPy LabA boat sails straight towards the foot of a cliff. A watcher at the top of the cliff measures the angle of depression of the boat. What happens to it?
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← A taut rope 35 m long runs from the top of a vertical pole to a peg on level ground. The rope makes an angle θ with the ground, and sin θ = 3/5. How far is the peg from the foot of the pole?A straight beam 46 m long rests with its upper end on a vertical wall. Its lower end is on level ground 23 m from the wall. What is the inclination of the beam to the ground? →
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