$2\cos^2 \theta - 2\sin^2 \theta = 1$,तो $\theta = \dots \dots ^\circ$

  • A
    $15$
  • B
    $30$
  • C
    $45$
  • D
    $60$

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

यदि $x = a \cos^3 \theta$ और $y = b \sin^3 \theta$ है,तो:

यदि $\cos \left( \frac{\alpha - \beta}{2} \right) = 2\cos \left( \frac{\alpha + \beta}{2} \right)$ दिया गया है,तो $\tan \frac{\alpha}{2} \tan \frac{\beta}{2}$ का मान ज्ञात कीजिए।

मान ज्ञात कीजिए: $\tan A + \cot (180^\circ + A) + \cot (90^\circ + A) + \cot (360^\circ - A)$

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

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