$\sin ^{6} \theta+\cos ^{6} \theta$ ની કિંમત કેટલી થાય?

  • A
    $1+3 \sin ^{2} \theta \cos ^{2} \theta$
  • B
    $1$
  • C
    $1-3 \sin ^{2} \theta \cos ^{2} \theta$
  • D
    $1-3 \sin \theta \cos \theta$

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$\cos 41^{\circ} \cdot \cos 42^{\circ} \cdot \cos 43^{\circ} \cdot \cos 44^{\circ} \cdot \cos 45^{\circ} \cdot \cos 46^{\circ} \cdot \cos 47^{\circ} \cdot \cos 48^{\circ} \cdot \cos 49^{\circ}$ ની કિંમત શોધો.

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