જો $\tan \theta = \frac{\sin \alpha - \cos \alpha}{\sin \alpha + \cos \alpha}$ હોય,તો $\sin \alpha + \cos \alpha$ અને $\sin \alpha - \cos \alpha$ ની કિંમત શું થાય?

  • A
    $\sqrt{2} \cos \theta, \sqrt{2} \sin \theta$
  • B
    $\sqrt{2} \sin \theta, \sqrt{2} \cos \theta$
  • C
    $\sqrt{2} \sin \theta, \sqrt{2} \sin \theta$
  • D
    $\sqrt{2} \cos \theta, \sqrt{2} \cos \theta$

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જો $A$ અને $B$ બે ખૂણાઓ એવા હોય કે $A, B \in (0, \pi)$ અને તેઓ પૂરક ખૂણાઓ ન હોય,તથા $\sin A - \sin B = 0$ હોય,તો

$\frac{\sin x}{1+\cos x} + \frac{1+\cos x}{\sin x} = ?$

$\frac{\cot 54^{\circ}}{\tan 36^{\circ}} + \frac{\tan 20^{\circ}}{\cot 70^{\circ}}$ ની કિંમત શોધો.

$\sin (\pi + \theta )\sin (\pi - \theta )\csc^2 \theta = $

કિંમત શોધો: $\sin ^2\frac{\pi }{8} + \sin ^2\frac{3\pi }{8} + \sin ^2\frac{5\pi }{8} + \sin ^2\frac{7\pi }{8} = $

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