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03-08-2017
Mathematics

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mreijepatmat mreijepatmat

03-08-2017

Let AB the length of the lighthouse, with A, its foot and AC the distance from the foot of the lighthouse to the ship.
The angle of depression = to angle BCA (alternate interior)

tan (BCA) = 88/1532
tan (BCA) = 22/383 = 0.0574413
tan⁻¹(0.0574413) = 3.287 = 3.29" (3rd Answer)

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