જો $\tan \theta \cdot \tan 2 \theta = 1$ હોય,તો $\sin ^{2} 2 \theta + \tan ^{2} 2 \theta$ ની કિંમત શોધો.

  • A
    $\frac{3}{4}$
  • B
    $\frac{10}{3}$
  • C
    $3 \frac{3}{4}$
  • D
    $3$

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જો $A + B + C = 270^o$ હોય,તો $\cos 2A + \cos 2B + \cos 2C + 4\sin A \sin B \sin C = $

$2\sin A{\cos ^3}A - 2{\sin ^3}A\cos A = $

ધારો કે $E = \left( {1 - \frac{{\cos 61^\circ}}{{\cos 1^\circ}}} \right) \left( {1 - \frac{{\cos 62^\circ}}{{\cos 2^\circ}}} \right) \dots \left( {1 - \frac{{\cos 119^\circ}}{{\cos 59^\circ}}} \right)$,તો $E$ ની કિંમત શોધો:

જો $y = 3\,\sin\,x + 4\,\cos\,x$ હોય,તો $y$ નું મહત્તમ મૂલ્ય શોધો.

$5 \cos \theta + 3 \cos \left( \theta + \frac{\pi}{3} \right) - 1$ ની મહત્તમ કિંમત શોધો.

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