1.

\[ABCD\] is a rectangular field. A vertical lamp post of height 12m stands at the corner A. If the angle of elevation of its top from B is \[{{60}^{o}}\] and from C is\[{{45}^{o}}\], then the area of the field is [Kerala (Engg.) 2005]

A. \[48\sqrt{2}sq.m\]
B. \[48\sqrt{3}sq.m\]
C. \[48sq.m\]
D. \[12\sqrt{2}sq.m\]
E. \[12\sqrt{3}sq.m\]
Answer» B. \[48\sqrt{3}sq.m\]


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