$\tan^{-1} \left( \frac{\sin 2 - 1}{\cos 2} \right)$ નું મૂલ્ય કેટલું થાય?

  • A
    $\frac{\pi}{2} - 1$
  • B
    $2 - \frac{\pi}{2}$
  • C
    $1 - \frac{\pi}{4}$
  • D
    $\frac{\pi}{4} - 1$

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$\frac{\sin^2 A - \sin^2 B}{\sin A \cos A - \sin B \cos B} = $

જો $A$ બીજા ચરણમાં હોય અને $3\tan A + 4 = 0$ હોય,તો $2\cot A - 5\cos A + \sin A$ ની કિંમત શોધો.

$\sin 12^\circ \sin 24^\circ \sin 48^\circ \sin 84^\circ = $

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?

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