1.

The angles of elevation of the top of a tower as observed from the bottom and top of a building of height 80 metre are 60 and 45 respectively. The distance of the base of the tower from the base of the building is:-

A. $$ 40 {( sqrt{3}-1)} metre $$
B. $$ 40 {(3+ sqrt{3})} metre $$
C. $$ 40 {(3- sqrt{3})} metre $$
D. $$ 40({ sqrt{3}}+1) meter$$
Answer» E.


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