यदि $\tan 7 \theta \cdot \tan 3 \theta = 1$ है,तो $\theta$ का मान .......... है।

  • A
    $30$
  • B
    $18$
  • C
    $15$
  • D
    $9$

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Similar Questions

$\tan (65^\circ - \theta) - \cot (25^\circ + \theta) - \sec (55^\circ - \theta) + \operatorname{cosec}(35^\circ + \theta) = \ldots \ldots \ldots \ldots$ (जहाँ,$0 < \theta < 25^\circ$)

सिद्ध कीजिए कि,
$(\sqrt{3}+ 1) (3-\cot 30^{\circ})=\tan ^{3} 60^{\circ}-2 \sin 60^{\circ}$

यदि $\operatorname{cosec} A = \sqrt{10}$ है,तो $\sin A = \dots$

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

$\Delta ABC$ में,$m \angle C = 90^{\circ}$ और $\cos B = \frac{1}{2}$ है,तो $\operatorname{cosec} A = \ldots$

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