मान ज्ञात कीजिए: $\cos^2 76^\circ + \cos^2 16^\circ - \cos 76^\circ \cos 16^\circ$

  • A
    $-1/4$
  • B
    $1/2$
  • C
    $0$
  • D
    $3/4$

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Similar Questions

मान लीजिए $f(\theta) = \sin \theta (\sin \theta + \sin 3\theta)$,तो $f(\theta)$

यदि $x = \sec \phi - \tan \phi$ और $y = \csc \phi + \cot \phi$ है,तो:

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

$\cos^2 76^{\circ} + \cos^2 16^{\circ} - \cos 76^{\circ} \cos 16^{\circ}$ का मान ज्ञात कीजिए।

मान ज्ञात कीजिए: $\sin 6^{\circ} + \sin 54^{\circ} + \sin 126^{\circ} + \cos 156^{\circ}$

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