An electric pole is 10 m high. A steel wire tied to top of the pole is affixed at a point on the ground to keep the pole up right. If the wire makes an angle of 45° with the horizontal through the foot of the pole, find the length of the wire.
Let the length of the wire = l (m)
In ∆ABC,
Sin 45° =
=
l ⇒ 10√2 m
⇒ 10x1.41
⇒14.1 m
Therefore Length of wire is 14.1 m