Two poles of height 30 meters and 10 meters are erected on the ground The top of the poles are tied ...........

Quantitative Aptitude ( CCS) Trignometry

Two poles of height 30 meters and 10 meters are erected on the ground. The top of the poles are tied by a wire of length 40 m. Find the angle made by the wire with the horizontal.

75⁰

45⁰

60⁰

30⁰

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Explanation:

Let AB and CD are the poles of heights 30 m and 10 m respectively.
Let the angle made by the wire with horizontal is θ.
Height And Distances Solved
In ΔDEB, sinθ = BE/BD =20/40 = 1/2
→ sinθ = 30⁰