MCQs of નિશ્વાયક

Showing 81 to 83 out of 83 Questions

81.

જો a ≠ b ≠ c, તો

|\begin{matrix} 1 & 1 & 1 \\ b & c & a \\ c & a & b \end{matrix}|

_____ થાય.

82.

જો

|\begin{matrix} \sin x & \cos x & \cos x \\ \cos x & \sin x & \cos x \\ \cos x & \cos x & \sin x \end{matrix}| = 0

, તો x _____ .

83.

|\begin{matrix} \cos (α + β) & - \sin (α + β) & \cos 2 β \\ \sin α & \cos α & \sin β \\ - \cos α & \sin α & \cos β \end{matrix}|

એ _____ .

Showing 81 to 83 out of 83 Questions