Distance between a Whale and a Lighthouse A whale researcher is watching a whale approach directly toward a lighthouse as she observes from the top of this lighthouse. When she first begins watching the whale, the angle of depression to the whale is 15 50'. Just as the whale turns away from the lighthouse, the angle of depression is 35° 40'. If the height of the lighthouse is 68.7 m, find the distance traveled by the whale as it approached the lighthouse. 15° 50 35 40

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