Question 280034
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From the top of a 210 ft lighthouse, the angle of depression to a ship in the ocean is 21 degrees. 
How far is the ship from the base of the lighthouse to the nearest tenth of a foot?
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        The solution in the post by @mananth is incorrect.
        I came to bring a correct solution.



The angle of depression from the top of tower = angle of inclination from the ship
tan(21°) = 210/distance from foot of light house
distance = 210/tan(21°) = 210/0.38386403503 = 547 ft  (rounded).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>ANSWER</U>


Solved correctly.