Class 12Mathematics3-4. Matrices and DeterminantsExpansion of determinants, Solution of equation in the form of determinants and area of triangle and Equation of Line
MediumThe solution of the equation $\left| \begin{array}{ccc} \cos \theta & \sin \theta & \cos \theta \\ -\sin \theta & \cos \theta & \sin \theta \\ -\cos \theta & -\sin \theta & \cos \theta \end{array} \right| = 0$ is:
- A$\theta = n\pi$
- B$\theta = 2n\pi \pm \frac{\pi}{2}$
- C$\theta = n\pi \pm (-1)^n \frac{\pi}{4}$
- D$\theta = 2n\pi \pm \frac{\pi}{4}$
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