જો $x=\frac{\sin^3 \theta}{\cos^2 \theta}$ અને $y=\frac{\cos^3 \theta}{\sin^2 \theta}$ હોય,જ્યાં $\sin \theta+\cos \theta=\frac{1}{2}$ હોય,તો $x+y=$

  • A
    $\frac{48}{9}$
  • B
    $\frac{34}{9}$
  • C
    $\frac{65}{18}$
  • D
    $\frac{79}{18}$

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$\sqrt{3} \cot 20^{\circ} - 4 \cos 20^{\circ}$ નું મૂલ્ય કેટલું થાય?

$\sum\limits_{r = 1}^{89} {{\log _3}(\tan {r^o})} = $

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જો $\cos A+\cos (A+B)+\cos (A+2 B)+\ldots$ $n$ પદો સુધી $=$ $\cos \left(\frac{2 A+(n-1) B}{2}\right) \sin \frac{n B}{2} \operatorname{cosec} \frac{B}{2}$ હોય,તો $\cos \frac{\pi}{19}+\cos \frac{3 \pi}{19}+\cos \frac{5 \pi}{19}+\ldots+\cos \frac{17 \pi}{19} = $

$\frac{\sqrt{3}\text{cosec } 20^{\circ}-\sec 20^{\circ}}{\cos 20^{\circ}\cos 40^{\circ}\cos 60^{\circ}\cos 80^{\circ}}$ નું મૂલ્ય કેટલું થાય?

કિંમત શોધો: $\sqrt{3} \operatorname{cosec} 20^{\circ} - \sec 20^{\circ}$

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