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

  • A
    $\cot 15^{\circ}$
  • B
    $\cot 75^{\circ}$
  • C
    $\sec 15^{\circ}$
  • D
    $\tan 75^{\circ}$

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સાબિત કરો કે $\frac{1+\sec \theta-\tan \theta}{1+\sec \theta+\tan \theta}=\frac{1-\sin \theta}{\cos \theta}$

Difficult
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સાબિત કરો કે,
$(\sqrt{3}+ 1) (3-\cot 30^{\circ})=\tan ^{3} 60^{\circ}-2 \sin 60^{\circ}$

$\cos (40^{\circ}-\theta)-\sin (50^{\circ}+\theta) = \ldots \ldots \ldots \ldots$

જો $0 < \theta < 90$ અને $\sin \theta = \cos 30$ હોય,તો $2 \tan^2 \theta - 1 = \dots$

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

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