Let D= | ccc & & & & - - & & 0 | then - Vidyadip

MCQ

Let $D=\left|\begin{array}{ccc}\sin \theta \cdot \cos \phi & \sin \theta \cdot \sin \phi & \cos \theta \\ \cos \theta \cdot \cos \phi & \cos \theta \cdot \sin \phi & -\sin \theta \\ -\sin \theta \cdot \sin \phi & \sin \theta \cdot \cos \phi & 0\end{array}\right|$ then

A
D is independent of θ
✓
D is independent of φ
C
D is a constant
D
$\frac{d D}{d}$ at $\theta=\frac{\pi}{2}$ is equal to 0

✓

Answer

Correct option: B.

D is independent of φ

(b) D is independent of φ

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