If the angle of elevation of the sun changes from 30° to 45°, the length of the shadow of a pillar decreases by 20 metres. The height of the pillar is

If the angle of elevation of the sun changes from 30° to 45°, the le

1.	If the angle of elevation of the sun changes from 30° to 45°, the length of the shadow of a pillar decreases by 20 metres. The height of the pillar is
A.	20(√3 – 1) m
B.	20 (√3 + 1) m
C.	10 (√3 – 1) m
D.	10(√3 + 1) m
Answer» E.

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If the angle of elevation of the sun changes from 30° to 45°, the length of the shadow of a pillar decreases by 20 metres. The height of the pillar is

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