$\cos 52^\circ + \cos 68^\circ + \cos 172^\circ$ का मान क्या है?

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $\frac{3}{2}$

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Similar Questions

$\sin^2 \frac{\pi}{8} + \sin^2 \frac{3\pi}{8} + \sin^2 \frac{5\pi}{8} + \sin^2 \frac{7\pi}{8}$ का मान क्या है?

$\sin 10^\circ + \sin 20^\circ + \sin 30^\circ + ... + \sin 360^\circ$ का मान क्या है?

यदि $m \tan (\theta - 30^\circ) = n \tan (\theta + 120^\circ)$ है,तो $\frac{m + n}{m - n} = $

$\sin^2 5^\circ + \sin^2 10^\circ + \sin^2 15^\circ + \dots + \sin^2 85^\circ + \sin^2 90^\circ$ का मान क्या है?

$\left( \frac{\sin 2A}{1 + \cos 2A} \right) \left( \frac{\cos A}{1 + \cos A} \right) = $

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