# math

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A radio transmission tower is 170 feet tall. How long should a guy wire be if it is to be attached 7 feet from the top and is to make an angle of 30° with the ground? Give your answer to the nearest tenth of a foot

• math -

Draw a rt triangle:

X = Hor. side.
Y = 7 Ft = Ver. side.
Z = Hyp. = Length of guy wire.
A = 30 Deg.

Z = Y/sinA = 7 / sin30 = 14 Ft.

y

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