$\sin 10^{\circ} \cdot \sin 30^{\circ} \cdot \sin 50^{\circ} \cdot \sin 70^{\circ}$ નું મૂલ્ય શું છે?

  • A
    $\frac{1}{8}$
  • B
    $\frac{3}{16}$
  • C
    $\frac{\sqrt{3}}{16}$
  • D
    $\frac{1}{16}$

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જો $\tan x = \frac{3}{4}$ અને $\pi < x < \frac{3\pi}{2}$ હોય,તો $\cos \frac{x}{2}$ ની કિંમત શોધો.

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

જો $\cos A = \frac{3}{4}$ હોય,તો $32 \sin \left(\frac{A}{2}\right) \sin \left(\frac{5A}{2}\right) = $

$\frac{\sec 8A - 1}{\sec 4A - 1} = $

$\left( \frac{\sin 2A}{1 + \cos 2A} \right) \left( \frac{\cos A}{1 + \cos A} \right) = $

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