$(\tan 1^{\circ} \tan 2^{\circ} \tan 3^{\circ} \ldots \tan 89^{\circ})$ નું મૂલ્ય કેટલું છે?

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

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આપેલ છે કે $\sin \theta = \frac{a}{b},$ તો $\cos \theta$ ની કિંમત શું થાય?

$\sin \theta \cdot \cos (90^\circ - \theta) = \ldots \ldots \ldots$

જો $\sin \theta + \sin^2 \theta = 1$ હોય,તો $\cos^2 \theta + \cos^4 \theta = \dots$

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

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

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