Question

An electrical poor is 10 m height steel wire tied to a top of the poll and it is a Fixit at the point on the ground to keep the phone upright if the wind makes an angle of 45 it and horizontal through the foot of the poll find the length of the wire

Answer 1

Answer:

Given :

OA = 10 m ( electric pole)

∠B = 45°

Let OA be the electric Pole and B be  the point on the ground.

Let BA = x cm

In ∆ABO

sin 45° = AO /AB (perpendicular/ hypotenuse)

1 / √ 2 = 10 / x

x = 10 √2

x = 10 × 1.414    (Given √2 = 1.414)

x = 14.14 m

Hence, length of the wire is 14.14 m.

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