यदि $A + C = B$ है,तो $\tan A \tan B \tan C = $

  • A
    $\tan A \tan B + \tan C$
  • B
    $\tan B - \tan C - \tan A$
  • C
    $\tan A + \tan C - \tan B$
  • D
    $ - (\tan A \tan B + \tan C)$

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यदि $a^2 + 2a + \csc^2 \left( \frac{\pi}{2}(a + x) \right) = 0$ है,तो निम्नलिखित में से कौन सा सत्य है?

$\sin 15^\circ + \cos 105^\circ = $

त्रिकोणमितीय सारणी का उपयोग किए बिना,मान ज्ञात कीजिए: $\sin 48^{\circ} \sec 42^{\circ} + \cos 48^{\circ} \operatorname{cosec} 42^{\circ} = $

यदि $\csc \theta = \frac{p + q}{p - q}$ है,तो $\cot \left( \frac{\pi}{4} + \frac{\theta}{2} \right) = $

$(\operatorname{cosec} a - \sin a)(\sec a - \cos a)(\tan a + \cot a)$ का मान ज्ञात कीजिए।

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