$\cot 16^{\circ} \cot 44^{\circ} + \cot 44^{\circ} \cot 76^{\circ} - \cot 76^{\circ} \cot 16^{\circ} = $

  • A
    $1$
  • B
    $-1$
  • C
    $-3$
  • D
    $3$

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Similar Questions

यदि $\tan^2 \alpha \tan^2 \beta + \tan^2 \beta \tan^2 \gamma + \tan^2 \gamma \tan^2 \alpha + 2\tan^2 \alpha \tan^2 \beta \tan^2 \gamma = 1$ है,तो $\sin^2 \alpha + \sin^2 \beta + \sin^2 \gamma$ का मान क्या है?

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समीकरण $\frac{\sin^3 \theta - \cos^3 \theta}{\sin \theta - \cos \theta} - \frac{\cos \theta}{\sqrt{1 + \cot^2 \theta}} - 2 \tan \theta \cot \theta = -1$ सत्य है यदि:

यदि $\sum_{r=1}^{50} \tan ^{-1} \frac{1}{2 r^2}=p$ है,तो $\tan p$ का मान ज्ञात कीजिए।

यदि $\cos \alpha + \cos \beta = a$,$\sin \alpha + \sin \beta = b$ और $\alpha - \beta = 2 \theta$ है,तो $\frac{\cos 3 \theta}{\cos \theta} = $

$\sin ^3 10^{\circ}+\sin ^3 50^{\circ}-\sin ^3 70^{\circ}=$

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