If the angle of elevation of the sun changes from 30 degree to 45 degree then length of the shadow of a pillar decreases by 20 meters. The height of the pillar is:

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Q. If the angle of elevation of the sun changes from 30 degree to 45 degree then length of the shadow of a pillar decreases by 20 meters. The height of the pillar is:

(A) 20(√3−1) meter
(B) 20(√3+1) meter
(C) 10(√3−1) meter
(D) 10(√3+1) meter

Correct Answer - Option(D)

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