$(\sin 80^{\circ} + \cos 10^{\circ})(\sin 80^{\circ} - \cos 10^{\circ}) = \ldots \ldots \ldots$

  • A
    $1$
  • B
    $2$
  • C
    $0$
  • D
    $\cos^{2} 10^{\circ}$

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$\tan 15^{\circ}$ અને $\ldots \ldots \ldots \ldots$ ની કિંમત સમાન છે.

$\Delta ABC$ માં,$m\angle B = 90^\circ$,$m\angle C = 30^\circ$ અને $AC = 30 \text{ cm}$ હોય,તો $AB = \ldots \text{ cm}$.

લઘુકોણ $A$ અને $B$ માટે,જો $\tan A = 1$ અને $\sin B = \frac{1}{\sqrt{2}}$ હોય,તો $\cos (A + B) = \dots$

$\sin^{2} 30^{\circ} - \tan 45^{\circ} + \cos^{2} 60^{\circ} - \cot 90^{\circ}$ ની કિંમત ........ છે.

જો $A = 30^{\circ}$ હોય,તો $\cos 2A$ ની કિંમત $\ldots \ldots \ldots$ થાય.

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