6. The ratio of the length of a vertical rod and the length of its shadow is 1:√3. Find the
angle of elevation of the sun at that moment.
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Given :-
l(BC)
l(AB)
= 31
now, angle of elevation, ∠ACB=θ
now, tanθ=tan(∠ACB)=
BC
AB
= 31
⇒tan θ=( 31)
=tanθ=(tan 6π )
⇒θ= 6π
∴ The angle of elevation = 6π =30 ∘
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