यदि $\cos \theta = \frac{-3}{5}$ और $\theta$ दूसरे चतुर्थांश में नहीं है,तो $\tan \frac{\theta}{2} = $

  • A
    $2$
  • B
    $1$
  • C
    $-2$
  • D
    $-1$

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Similar Questions

$\cos x \cdot \cos 7 x - \cos 5 x \cdot \cos 13 x = $

यदि $\cot A=\frac{11}{60}$,$\cos B=\frac{7}{25}$ और न तो $A$ और न ही $B$ प्रथम चतुर्थांश में है,तो $\left(A+\frac{B}{2}\right)$ किस चतुर्थांश में स्थित है?

सिद्ध कीजिए कि $\cos^{2} 2x - \cos^{2} 6x = \sin 4x \sin 8x$.

यदि $\sin \theta - \cos \theta = \frac{1}{\sqrt{3}}$ है,तो $\sin(2\theta) + \cos(4\theta) + \sin(6\theta) = $

यदि $a \sin \theta = b \cos \theta$,जहाँ $a, b \neq 0$,तो $a \cos 2 \theta + b \sin 2 \theta = $

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