यदि $A, B, C$ एक त्रिभुज के कोण हैं,तो $\sum \frac{\cot A + \cot B}{\tan A + \tan B} = $

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

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यदि $\tan \theta - \cot \theta = a$ और $\sin \theta + \cos \theta = b$ है,तो ${({b^2} - 1)^2}({a^2} + 4)$ का मान ज्ञात कीजिए।

$\tan 9^{\circ} - \tan 27^{\circ} - \tan 63^{\circ} + \tan 81^{\circ}$ का मान क्या है?

$\tan \left( \frac{\pi }{4} + \theta \right) - \tan \left( \frac{\pi }{4} - \theta \right) = $

$\tan 3A - \tan 2A - \tan A = $

व्यंजक $\frac{\tan A}{1 - \cot A} + \frac{\cot A}{1 - \tan A}$ को इस प्रकार लिखा जा सकता है:

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