A) \[B=4A\]
B) \[B=-4A\]
C) \[B=-A\]
D) \[B=6A\]
Correct Answer: B
Solution :
B is obtained from A by the operations \[{{R}_{1}}\leftrightarrow {{R}_{3}},\,\,{{R}_{3}}\to 2{{R}_{3}}\] and \[({{\sin }^{2}}{{60}^{o}}+{{\sin }^{2}}{{60}^{o}}+{{\sin }^{2}}{{60}^{o}})\]. Hence, \[B=(-1)\,4A=-4A\].You need to login to perform this action.
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