જો $3 \sin 2 \theta = 2 \sin 3 \theta$ અને $0 < \theta < \pi$ હોય,તો $\sin \theta$ ની કિંમત કેટલી થાય?

  • A
    $\frac{\sqrt{17}}{4}$
  • B
    $\frac{\sqrt{5}}{4}$
  • C
    $\frac{\sqrt{3}}{4}$
  • D
    $\frac{\sqrt{15}}{4}$

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નીચેનામાંથી કયું નિત્યસમ સાચું છે?

જો $540^{\circ} < A < 630^{\circ}$ અને $|\cos A| = \frac{5}{13}$ હોય,તો $\tan \frac{A}{2} \tan A = $

જો $\cos^3 \theta + \cos^3 \left(\frac{2 \pi}{3} + \theta\right) + \cos^3 \left(\frac{4 \pi}{3} + \theta\right) = \alpha \cos 3 \theta$ હોય,તો $\alpha$ ની કિંમત શોધો.

જો $\sec \theta = 1\frac{1}{4}$ હોય,તો $\tan \frac{\theta}{2} = $

$\frac{1-\sin \theta+\cos \theta}{1-\sin \theta-\cos \theta} = $

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