A) 48m
B) 36m
C) 54m
D) 72m
Correct Answer: A
Solution :
In \[\Delta DAB,\,\,\tan \theta =\frac{64}{d}\,\Rightarrow \,d=64\,\cot \,\theta \] In \[\Delta CDE,\,\tan ({{90}^{0}}\,-\theta )\,=\frac{36}{d}\] \[\therefore \,\,\,(1)\times (2)\] \[\Rightarrow \,\,64\times 36\,={{d}^{2}}\] \[\Rightarrow \,d=48\]You need to login to perform this action.
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