If the angle of elevation of the sun decreases from 45° to 30°, then the length of the shadow of a pillar increases by 60m. The height of the pillar is
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Correct answer: C
Explanation
The correct answer is option 3
tan 45 = h/x
h = x
tan 30 = h/x+60
1/√3 = h/hx+60
h = 60/√3-1 = 30(√3+1)m