If the angle of elevation of the sun changes from 30o to 45o 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 30o to 45o then leng

1.	If the angle of elevation of the sun changes from 30^oto 45^o then length of the shadow of a pillar decreases by 20 meters. The height of the pillar is:
A.	$$ {20( sqrt{3}-1)} meter$$
B.	$$ {20( sqrt{3}+1)} meter$$
C.	$$ {10( sqrt{3}-1)} meter$$
D.	$$ {10( sqrt{3}+1)} meter$$
Answer» E.

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

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