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

  • 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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यदि $\sin 70^{\circ} = \cos \theta$ है,तो $\theta = \ldots \ldots \ldots \ldots$ ($^{\circ}$ में)

'True' (सत्य) या 'False' (असत्य) लिखिए और अपने उत्तर का औचित्य बताइए।
$\frac{\tan 47^{\circ}}{\cot 43^{\circ}}=1$

यदि $\cos A = \frac{4}{5}$ है,तो $\tan A$ का मान ज्ञात कीजिए।

यदि $\sin ^{2}(3 x+30^{\circ})+\cos ^{2}(2 x+45^{\circ})=1$ है,तो $x = \dots$ ($^{\circ}$ में)

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