જો $\cos \theta + \cos 7\theta + \cos 3\theta + \cos 5\theta = 0$ હોય,તો $\theta$ ની કિંમત શોધો:

  • A
    $\frac{n\pi}{4}$
  • B
    $\frac{n\pi}{2}$
  • C
    $\frac{n\pi}{8}$
  • D
    આમાંથી કોઈ નહીં

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જો $\sinh x = \tan A$ હોય,તો $|\tanh x| =$

જો $\cos x + \cos y - \cos (x + y) = \frac{3}{2}$ હોય,તો

$\sin ^3 10^{\circ}+\sin ^3 50^{\circ}-\sin ^3 70^{\circ}=$

જો $\cos \theta - 4 \sin \theta = 1$ હોય,તો $\sin \theta + 4 \cos \theta$ ની કિંમત શોધો.

$0 \leq P, Q \leq \frac{\pi}{2}$ માટે, જો $\sin P + \cos Q = 2$ હોય, તો $\tan \left(\frac{P + Q}{2}\right)$ ની કિંમત શોધો.

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