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November 21, 2014

Homework Help: Math

Posted by Abby on Thursday, February 18, 2010 at 3:22pm.

1) Find the angle of depression from the top of a lighthouse 250 feet above water level to the water line of a ship 2 miles off shore.

arc tan 10560/250 = 88.64 ft

Is this correct?

2) A passenger is in an airplane flying at n altitude of 10 kilometers sees two towns directly to the left og the plane. Tha angles of depression to the towns are 28 degrees and 55 degrees. How far apart are the towns?

I know that 90-55-28 = 7 and then take the inverse of tan so arc tan (&) = 81.81. Is that correct so far? I do not know what to do after this.

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