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+1 vote
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in Trigonometry by (34.5k points)
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If the angle of elevation of the sun is 60° then the ratio of height of a tree with its shadow is

A) 1 : 1

B) 1 : √3 

C) √3 : 1 

D) 1 : 3

2 Answers

+1 vote
by (66.4k points)
selected by
 
Best answer

Correct option is: C) √3 : 1

Let the height of tree be BC and the length of the shadow of  tree be AB.

Given that angle of elevation of the sun is \(60^\circ\)

\(\therefore\) \(\angle\)A = \(60^\circ\)

In right  \(\triangle\)ABC,

tan A = \(\frac {BC}{AB}\)

\(\frac {BC}{AB}\) = tan \(60^\circ\) = \(\sqrt3\) = \(\frac {\sqrt3}{1}\) (\(\because\)  \(\angle\)A = \(60^\circ\) and tan \(60^\circ\) = \(\sqrt3\) )

\(\therefore\) BC : AB = \(\sqrt3\) : 1

Hence, the ration of height of tree with its shadow is  \(\sqrt3\) : 1.

+2 votes
by (35.6k points)

Correct option is: C) √3 : 1

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