Homework Help: Precalculus/Trig 5

Posted by Anonymous on Monday, January 14, 2013 at 1:43am.

A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 15 feet from the top and is to make an angle of 26 degrees with the ground? Give your answer to the nearest tenth of a foot

Precalculus/Trig 5 - Reiny, Monday, January 14, 2013 at 8:40am
Let its length be h
After making a sketch , I can see that
sin 26° = 105/h
h = 105/sin26 = 239.52

or 239.5 ft

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