$\sin ^{2} 30^{\circ} \cos ^{2} 45^{\circ}+5 \tan ^{2} 30^{\circ}+\frac{3}{2}\sin ^{2} 90^{\circ}-3 \cos ^{2} 90^{\circ}$ का मान ज्ञात कीजिए।

  • A
    $3 \frac{7}{24}$
  • B
    $3 \frac{3}{24}$
  • C
    $3 \frac{1}{24}$
  • D
    $3 \frac{5}{24}$

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$\sin ^{2} 75^{\circ}-\sin ^{2} 15^{\circ}$ का मान है:

$\sin 12^\circ \sin 24^\circ \sin 48^\circ \sin 84^\circ = $

$\frac{{\sin \theta }}{{1 - \cot \theta }} + \frac{{\cos \theta }}{{1 - \tan \theta }} = $

यदि $\tan \theta + \sin \theta = m$ और $\tan \theta - \sin \theta = n$ है,तो

यदि $\cos \theta = \frac{1}{2}\left( a + \frac{1}{a} \right)$ है,तो $\cos 3\theta$ का मान क्या है?

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