સમીકરણ $\sin 2\theta + \cos 2\theta = -\frac{1}{2}$ માટે $\theta \in \left( 0, \frac{\pi}{2} \right)$ હોય,તો ઉકેલની સંખ્યા શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $3$

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જો $2 \sin^{2} x + 7 \cos x = 5$ હોય,તો $\cos x$ ની શક્ય કિંમત કઈ છે?

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

જો $|\tan \theta|=\tan \theta+\frac{1}{\cos \theta}$ અને $\theta \in[0, 2\pi]-\{\pm \frac{\pi}{2}\}$ હોય,તો $\theta$ ની કિંમત શોધો.

જો $S = \{\theta \in [-\pi, \pi] : \cos \theta \cos \frac{5\theta}{2} = \cos 7\theta \cos \frac{7\theta}{2}\}$,તો $n(S)$ ની કિંમત . . . . . . છે.

જો $\sin 6 \theta + \sin 4 \theta + \sin 2 \theta = 0$ હોય,તો $\theta$ નું વ્યાપક મૂલ્ય શું છે?

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