Math, trigonometry

An observer in a lighthouse 47m high sights a ship at at an angle of depression of 4.25• if the the foot of the light house is at sea level how far is the ship from the foot of the lighthouse

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  1. did you make your sketch ?

    looks like
    tan 4.25° = 47/x

    x = 47/tan4.25°

    calculator time ...

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