1.

Q: 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:

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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