$\tan (90^\circ - \theta) = \ldots \ldots \ldots$

  • A
    $\tan \theta$
  • B
    $\cot \theta$
  • C
    $\sec \theta$
  • D
    $\operatorname{cosec} \theta$

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જો $\cos 9 \alpha = \sin \alpha$ અને $9 \alpha < 90^{\circ}$ હોય,તો $\tan 5 \alpha$ ની કિંમત શોધો.

$\sin^{2} 15^{\circ} + \sin^{2} 75^{\circ} = \dots$

જો $a \sin \theta + b \cos \theta = c$ હોય,તો સાબિત કરો કે $a \cos \theta - b \sin \theta = \pm \sqrt{a^2 + b^2 - c^2}$,જ્યાં $a^2 + b^2 \geq c^2$ આપેલ છે.

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$\tan 5^{\circ} \cdot \tan 25^{\circ} \cdot \tan 45^{\circ} \cdot \tan 65^{\circ} \cdot \tan 85^{\circ}$ ની કિંમત $\ldots \ldots \ldots \ldots$ છે.

જો $\tan 7 \theta \cdot \tan 3 \theta = 1$ હોય,તો $\theta$ ની કિંમત .......... છે.

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