A) 3
B) 1
C) 0
D) 6
Correct Answer: D
Solution :
We have, \[{{\cot }^{2}}30{}^\circ +\cos ec30{}^\circ +3{{\tan }^{2}}30{}^\circ \] \[={{\left( \sqrt{3} \right)}^{2}}+\left( 2 \right)+3{{\left( \frac{1}{\sqrt{3}} \right)}^{2}}\] \[=3+2+3\times \frac{1}{3}=6\]You need to login to perform this action.
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