यदि + =90^ , तब | ll & & |= - Vidyadip

MCQ

यदि $\theta+\phi=90^{\circ}$, तब $\left|\begin{array}{ll}\cos \theta & \sin \theta \\ \sin \phi & \cos \phi\end{array}\right|=$

A
1
✓
$0$
C
-1
D
$\infty$

✓

Answer

Correct option: B.

$0$

B

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