A) 26
B) 12
C) 18
D) 36
Correct Answer: D
Solution :
\[\Delta =\frac{1}{2}\,\left( \frac{a}{\cos \theta } \right)\,\left( \frac{b}{\cos \theta } \right)\,=\frac{ab}{\sin 2\theta }\ge ab\] \[\therefore \,\,\,\,{{\Delta }_{\min .}}=(4)\,(9)\,=36\]You need to login to perform this action.
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