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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. | |