A) 10 metre
B) \[\frac{10}{\sqrt{3}}metre\]
C) \[10\sqrt{3}metre\]
D) None of these
Correct Answer: C
Solution :
\[OA=h\,\cot {{60}^{o}},\,OB=h\cot {{30}^{o}}\], \[R=\frac{abc}{4\Delta }\] \[\Rightarrow \] \[h=\frac{20}{\left( \sqrt{3}-\frac{1}{\sqrt{3}} \right)}=\frac{20\sqrt{3}}{2}=10\sqrt{3}\].You need to login to perform this action.
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