જો $\cot \frac{2x}{3} + \tan \frac{x}{3} = \operatorname{cosec} \frac{kx}{3}$ હોય, તો $k$ ની કિંમત શોધો.

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

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જો $\frac{\tan 3A}{\tan A} = a$ હોય,તો $\frac{\sin 3A}{\sin A}$ ની કિંમત શોધો.

સાબિત કરો કે $\sin 2x + 2 \sin 4x + \sin 6x = 4 \cos^2 x \sin 4x$.

$\tan 20^\circ \tan 40^\circ \tan 60^\circ \tan 80^\circ = $

જો $\tan \theta = \frac{1}{3}$ હોય,તો $\cos 2 \theta = $

જો $\sin \alpha = \frac{336}{625}$ અને $450^\circ < \alpha < 540^\circ$ હોય,તો $\sin \left( \frac{\alpha}{4} \right) = $

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