જો $\cos (\alpha+\beta)=0$ હોય,તો $\sin (\alpha-\beta)$ ને શેમાં ઘટાડી શકાય?

  • A
    $\cos 2 \beta$
  • B
    $\cos \beta$
  • C
    $\sin \alpha$
  • D
    $\sin 2 \alpha$

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Similar Questions

જો $\tan ^{2} \theta = \sin ^{2} \theta + \cos ^{2} \theta$ અને $0 < \theta < 90^{\circ}$ હોય,તો $\theta$ ની કિંમત ...... છે. ($^{\circ}$ માં)

$\frac{1}{\sin ^{2} \theta}-1 = \ldots \ldots \ldots$

$\sin 48^{\circ} \sec 42^{\circ} + \cos 48^{\circ} \operatorname{cosec} 42^{\circ} = \ldots \ldots \ldots \ldots$

$0^{\circ} < \theta < 90^{\circ}$ માટે,જેમ $\theta$ નું મૂલ્ય $0^{\circ}$ થી $90^{\circ}$ સુધી વધે છે,તેમ $\ldots \ldots \ldots \ldots$ નું મૂલ્ય વધે છે.

જો $\tan \theta = \frac{4}{3}$ હોય,તો $\frac{5 \sin \theta + 2 \cos \theta}{3 \sin \theta - \cos \theta} = \ldots \ldots$

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