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

  • A
    $2n\pi + \frac{\pi}{4}$
  • B
    $2n\pi \pm \frac{\pi}{4}$
  • C
    $2n\pi - \frac{\pi}{4}$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

જો $\sin 2x = 4 \cos x$ હોય,તો $x$ ની કિંમત શું થાય?

જો $\cos 3x + \sin \left( 2x - \frac{7\pi}{6} \right) = -2$ હોય,તો $x = $ (જ્યાં $k \in Z$)

$\cos(x) - \sin(x) = 0$ નો વ્યાપક ઉકેલ શોધો.

જો $-\pi < x < \pi$ માટે $2{\sin ^2}x + {\sin ^2}2x = 2$ હોય,તો $x = $

$\frac{1}{2} + \cos x + \cos 2x + \cos 3x + \cos 4x = 0$ નો ઉકેલ શોધો.

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