Question

A guy wire attached to the top of a radio antenna

is bolted to the ground 48 m from the base of

the tower. If the wire makes an angle of 14°

with the ground. What is the length of the

guy wire? Round your answer to the nearest

hundredth of a meter.

Answer 1

49.47 m

Explanation:

You will need to use the cosine function

which is the ratio adjacent side/hypotenuse

So, let x = length of guy wire

then cos 14 = 48/x

x cos 14 = 48

x = 48/cos 14

= 49.47 m

Note: You must memorize the definitions of all the trig functions so you can do problems like this one. OK?