A) 0
B) \[12{{\cos }^{2}}x-10{{\sin }^{2}}x\]
C) \[12{{\sin }^{2}}x-10{{\cos }^{2}}x-2\]
D) \[10\sin 2x\]
Correct Answer: A
Solution :
Applying\[{{C}_{1}}\to {{C}_{1}}+{{C}_{2}}\], we get\[\left| \,\begin{matrix} 1 & {{\cos }^{2}}x & 1 \\ 1 & {{\sin }^{2}}x & 1 \\ 2 & 12 & 2 \\ \end{matrix}\, \right|\,=0\].
You need to login to perform this action.
You will be redirected in
3 sec
