જો $\tan \left(\frac{x}{2}\right) = \frac{m}{n}$ હોય,તો $m \sin (x) + n \cos (x)$ ની કિંમત કેટલી થાય?

  • A
    $m$
  • B
    $-m$
  • C
    $-n$
  • D
    $n$

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

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 $\alpha = \frac{180^{\circ}}{7}$ હોય, તો $3 \sin \alpha - 4 \sin^{3} \alpha$ ની કિંમત કેટલી થાય?

જો $\csc \theta = \frac{p + q}{p - q}$ $(p \neq q \neq 0)$ હોય,તો $\left| \cot \left( \frac{\pi}{4} + \frac{\theta}{2} \right) \right|$ ની કિંમત શોધો.

$\cos 15^{\circ} \cos 7.5^{\circ} \sin 7.5^{\circ}$ નું મૂલ્ય શું છે?

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