अंतराल $\left( 0, \frac{\pi}{2} \right)$ में $\sin \left( x + \frac{\pi}{6} \right) + \cos \left( x + \frac{\pi}{6} \right)$ का अधिकतम मान किस बिंदु पर प्राप्त होता है?

  • A
    $x = \frac{\pi}{12}$
  • B
    $x = \frac{\pi}{6}$
  • C
    $x = \frac{\pi}{3}$
  • D
    $x = \frac{\pi}{2}$

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यदि $A + B = 225^\circ$ है,तो $\frac{{\cot A}}{{1 + \cot A}} \cdot \frac{{\cot B}}{{1 + \cot B}} = $

${\tan ^2}\theta + {\cot ^2}\theta$ का मान क्या है?

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