$\frac{\sec \theta-1}{\sec \theta+1} = \ldots$

  • A
    $\tan \theta$
  • B
    $\frac{1-\sin \theta}{1+\sin \theta}$
  • C
    $\frac{\operatorname{cosec} \theta-1}{\operatorname{cosec} \theta+1}$
  • D
    $\frac{1-\cos \theta}{1+\cos \theta}$

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'True' (સાચું) અથવા 'False' (ખોટું) લખો અને તમારા જવાબનું સમર્થન કરો.
$(\tan \theta+2)(2 \tan \theta+1)=5 \tan \theta+\sec ^{2} \theta$

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

$\tan (90^\circ - \theta) = \ldots \ldots \ldots$

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

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

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