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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यदि $3 \sin \theta = 4 \cos \theta$ है,तो $\tan \theta = \ldots$

$\sin (45^{\circ}+\theta)-\cos (45^{\circ}-\theta)$ का मान किसके बराबर है?

यदि $\sin \theta + 2 \cos \theta = 1$ दिया गया है,तो सिद्ध कीजिए कि $2 \sin \theta - \cos \theta = 2$ है।

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$\cos 35^{\circ} = \ldots \ldots \ldots$

$\frac{\cos (90^{\circ}- A ) \sin (90^{\circ}- A )}{\tan (90^{\circ}- A )}$ का सरलीकरण ....... है।

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