$[0, 2\pi]$ માં $\alpha$ ના કેટલા મૂલ્યો માટે $2\sin^3\alpha - 7\sin^2\alpha + 7\sin\alpha = 2$ થાય?

  • A
    $6$
  • B
    $4$
  • C
    $3$
  • D
    $1$

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અંતરાલ $\left[\frac{\pi}{2}, \frac{3\pi}{2}\right]$ માં $\sin x + \sin 3x + \sin 5x = 0$ ના ઉકેલોની સંખ્યા કેટલી છે?

$1+\cos^2 \theta = 3 \sin \theta \cos \theta \Rightarrow \theta = ?$

જો $\tan (\pi \cos \theta ) = \cot (\pi \sin \theta )$ હોય,તો $\sin \left( \theta + \frac{\pi }{4} \right)$ ની કિંમત શોધો.

જો $4(\sin 2x \sin 4x + \sin^2 x) = 3$ હોય,તો $x =$

જો $\cos 2\theta = (\sqrt{2} + 1) \left( \cos \theta - \frac{1}{\sqrt{2}} \right)$ હોય,તો $\theta$ ની કિંમત શોધો.

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