Find the cofactors of elements a_ 12 , a_ 22 , a_ 32 respectively… - Vidyadip

MCQ

Find the cofactors of elements $a_{12}, a_{22}, a_{32}$ respectively of the matrix $\left[\begin{array}{ccc}1 & \sin \theta & 1 \\ -\sin \theta & 1 & \sin \theta \\ -1 & -\sin \theta & 1\end{array}\right]$.

✓
$0,2,-2 \sin \theta$
B
$2,0,2 \sin \theta$
C
$2,0,-2 \sin \theta$
D
$-2 \sin \theta, 2,0$

✓

Answer

Correct option: A.

$0,2,-2 \sin \theta$

(a)

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