Precalculus

The angle of depression From the top of a 75-foot lighthouse to a ship out in the ocean is 40'. How far is the ship From the lighthous?

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asked by Karen
  1. 75/x = tan 40°

    I assume you meant 40°, not 40', as that would have
    (a) been hard to measure
    (b) put the ship well over the horizon

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    posted by Steve

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