MCQ
$\left[\begin{array}{cc}\cos x & -\sin x \\ \sin x & \cos x\end{array}\right]$ का मान होगा :
  • A
    $\cos ^2 x-\sin ^2 x$
  • B
    $0$
  • 1
  • D
    -1

Answer

Correct option: C.
1
(C)

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