Question

A 30 foot wire is connected to the top of a 21 foot telephone pole. What is the angle of elevation that the wire makes with the ground?

Answer 1

14:14 m

Explanation:

Let AB=10= Height of Pole

and AD be the length of the wire

From △ABD

sin45o=ADAB⇒21=AD10⇒AD=102

⇒10×1.414 (Take2=1.414)

=14.14 m