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

  • 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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'True' (સાચું) અથવા 'False' (ખોટું) લખો અને તમારા જવાબનું સમર્થન કરો.
$\frac{\tan 47^{\circ}}{\cot 43^{\circ}}=1$

'True' (સાચું) અથવા 'False' (ખોટું) લખો અને તમારા જવાબનું સમર્થન કરો.
$\sqrt{(1-\cos^2 \theta) \sec^2 \theta} = \tan \theta$

$\frac{1}{\tan ^{2} \theta}+1 = \dots$

જો $\tan \theta = \sqrt{3}$ હોય,તો $\theta = \ldots$ ($^\circ$ માં)

$2 \sin ^{2} \theta+4 \sec ^{2} \theta+5 \cot ^{2} \theta+2 \cos ^{2} \theta-4 \tan ^{2} \theta-5 \operatorname{cosec}^{2} \theta = \dots$

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