જો $3 \cos \theta + 4 \sin \theta = 5$ હોય,તો $3 \sin \theta - 4 \cos \theta$ ની કિંમત શોધો.

  • A
    $1$
  • B
    $-1$
  • C
    $0$
  • D
    $\frac{1}{2}$

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જો $\sin A + \cos A = \sqrt{2}$ હોય,તો $\cos^2 A = $

આપેલ છે કે $\pi < \alpha < \frac{3\pi}{2}$,તો પદાવલિ $\sqrt{4\sin^4 \alpha + \sin^2 2\alpha} + 4\cos^2 \left(\frac{\pi}{4} - \frac{\alpha}{2}\right)$ ની કિંમત શોધો.

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ધારો કે $\alpha, \beta$ બે વાસ્તવિક સંખ્યાઓ છે જેથી $\pi < (\alpha-\beta) < 3 \pi$. જો $\sin \alpha+\sin \beta=\frac{-21}{65}$ અને $\cos \alpha+\cos \beta=\frac{-27}{65}$ હોય,તો $\cos \left(\frac{\beta-\alpha}{2}\right)=$

$\cos ^4 \frac{\pi}{12} + \cos ^4 \frac{5 \pi}{12} + \cos ^4 \frac{7 \pi}{12} + \cos ^4 \frac{11 \pi}{12} = $

$R$ થી $R$ પર વ્યાખ્યાયિત નીચેના વિધેયોમાંથી,અચળ વિધેય કયું છે?

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