If a tower 6m high casts a shadow of 2√3m long on . . .

Question : If a tower 6m high casts a shadow of 2√3m long on the ground, then the sun's elevation is :

a) 60°

b) 45°

c) 30°

d) 90°

Doubt by Yashika

Solution : 

In Rt. Δ ABC

tanθ=P/B
tanθ=6/2√3
tanθ=3/√3
tanθ=(3×√3)/(√3×√3)
tanθ=(3×√3)/3
tanθ=√3
tanθ=tan60°
θ=60°

The elevation of sun's is 60°.

Hence 'a) 60°' would be the correct option.