यदि $\tan A - \tan B = x$ और $\cot A - \cot B = y$ है,तो $\cot (A - B) =$

  • A
    $\frac{xy}{x+y}$
  • B
    $\frac{xy}{x-y}$
  • C
    $\frac{x-y}{xy}$
  • D
    $\frac{y-x}{xy}$

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यदि $a = \sin \frac{\pi}{18} \sin \frac{5\pi}{18} \sin \frac{7\pi}{18}$ और $x$ समीकरणों $y = 2[x] + 2$ और $y = 3[x - 2]$ का हल है,जहाँ $[x]$,$x$ का महत्तम पूर्णांक फलन दर्शाता है,तो $a$ का मान क्या होगा?

$\text{यदि } \sin(\alpha+\beta)=1, \sin(\alpha-\beta)=\frac{1}{2}, \alpha, \beta \in [0, \frac{\pi}{2}], \text{ तो } \tan(\alpha+2\beta) \cdot \tan(2\alpha+\beta) = ?$

यदि $\tan A = 2\tan B + \cot B$ है,तो $2\tan (A - B) = $

यदि $|\sin x-\cos ^2 x| \geq|3-3 \sin x+\sin ^2 x|+4|\sin x-1|$ है,तो $x=$

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