જો $A = 133^\circ$ હોય,તો $2\cos \frac{A}{2}$ ની કિંમત કેટલી થાય?

  • A
    $-\sqrt{1 + \sin A} - \sqrt{1 - \sin A}$
  • B
    $-\sqrt{1 + \sin A} + \sqrt{1 - \sin A}$
  • C
    $\sqrt{1 + \sin A} - \sqrt{1 - \sin A}$
  • D
    $\sqrt{1 + \sin A} + \sqrt{1 - \sin A}$

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જો $\cos \theta = \frac{-3}{5}$ અને $\pi < \theta < \frac{3\pi}{2}$ હોય,તો $\tan \frac{\theta}{2} + \sin \frac{\theta}{2} + 2 \cos \frac{\theta}{2} =$

જો $\sin x = \frac{1}{4}$ અને $x$ એ બીજા ચરણમાં હોય,તો $\sin \frac{x}{2}, \cos \frac{x}{2}$ અને $\tan \frac{x}{2}$ શોધો.

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$\cos \frac{\pi}{2^2} \cdot \cos \frac{\pi}{2^3} \cdot \dots \cdot \cos \frac{\pi}{2^{10}} \cdot \sin \frac{\pi}{2^{10}}$ ની કિંમત શોધો.

$\operatorname{cosec} 2 \theta - \cot 2 \theta = ?$

સાબિત કરો કે $\frac{\sin x - \sin 3x}{\sin^2 x - \cos^2 x} = 2 \sin x$.

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