यदि $\cos \theta = \frac{1}{\sqrt{2}}$ है,तो $\theta = \ldots$ ($^\circ$ में)

  • A
    $30$
  • B
    $45$
  • C
    $60$
  • D
    $90$

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Similar Questions

यदि $\cos 9 \alpha = \sin \alpha$ और $9 \alpha < 90^{\circ}$ है,तो $\tan 5 \alpha$ का मान ज्ञात कीजिए।

सिद्ध कीजिए कि,
$\frac{\tan A}{1+\sec A} + \frac{\tan A}{\sec A-1} = 2 \operatorname{cosec} A$

यदि $3 \theta$ एक न्यून कोण का माप है और $\sin 3 \theta = \cos (\theta - 26^{\circ})$ है,तो $\theta$ का मान $\ldots \ldots \ldots \ldots$ है। ($^{\circ}$ में)

सिद्ध कीजिए कि $\sqrt{\sec ^{2} \theta+\operatorname{cosec}^{2} \theta}=\tan \theta+\cot \theta$

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यदि $\sec \theta = \frac{5}{3}$ है,तो $\tan \theta = \ldots$

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