यदि $\cot \theta = \frac{a}{b}$ है,तो $\frac{\cos \theta - \sin \theta}{\cos \theta + \sin \theta} = \ldots$

  • A
    $\frac{a}{b}$
  • B
    $\frac{b}{a}$
  • C
    $\frac{a+b}{a-b}$
  • D
    $\frac{a-b}{a+b}$

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यदि $a \sin \theta + b \cos \theta = c$ है,तो सिद्ध कीजिए कि $a \cos \theta - b \sin \theta = \pm \sqrt{a^2 + b^2 - c^2}$,जहाँ $a^2 + b^2 \geq c^2$ दिया गया है।

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$\tan \theta + \cot \theta = \ldots \ldots \ldots$

$\sin \theta \cdot \cos (90^\circ - \theta) = \ldots \ldots \ldots$

$\sin^{2} 30^{\circ} - \tan 45^{\circ} + \cos^{2} 60^{\circ} - \cot 90^{\circ}$ का मान ........ है।

यदि $\tan 7 \theta \cdot \tan 3 \theta = 1$ है,तो $\theta$ का मान .......... है।

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