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

  • A
    $\sqrt{3} + 1$
  • B
    $\frac{\sqrt{3} + 1}{2}$
  • C
    $\frac{\sqrt{6} + \sqrt{2}}{4}$
  • D
    $\frac{1}{2}$

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Similar Questions

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

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

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જો $1+\sin ^{2} \theta=3 \sin \theta \cos \theta$ હોય,તો સાબિત કરો કે $\tan \theta=1$ અથવા $\frac{1}{2}$ થાય.

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જો $\sin ^{2}(3 x+30^{\circ})+\cos ^{2}(2 x+45^{\circ})=1$ હોય,તો $x = \dots$ ($^{\circ}$ માં)

સાબિત કરો કે $\sin^{6} \theta + \cos^{6} \theta + 3 \sin^{2} \theta \cos^{2} \theta = 1$.

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