Math MCQ: 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:

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:

Correct Answer: 10(√3+1) meter

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