$0 < \theta < 90$ અને $\sec \theta = \operatorname{cosec} 60^\circ$ હોય,તો $2 \cos^2 \theta - 1$ ની કિંમત ........ છે.

  • A
    $3$
  • B
    $1$
  • C
    $\frac{3}{4}$
  • D
    $\frac{1}{2}$

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Similar Questions

$\Delta ABC$ માં,$m \angle B = 90^{\circ}$ અને $m \angle A : m \angle C = 1 : 2$ છે. જો $BC = 4$ હોય,તો $AC$ શોધો.

$\frac{\sin 60^{\circ} + \cos 30^{\circ}}{1 + \sin 30^{\circ} + \cos 60^{\circ}} = \dots$

નીચેનાનું મૂલ્ય શોધો:
$2 \tan ^{2} 45^{\circ}+\cos ^{2} 30^{\circ}-\sin ^{2} 60^{\circ}$

$\sin 60^{\circ} \sin 45^{\circ} + \cos 60^{\circ} \cos 45^{\circ} = \ldots \ldots \ldots \ldots$

$\sin 60^{\circ} \cdot \cos 30^{\circ} + \cos 60^{\circ} \cdot \sin 30^{\circ} = ..........$

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