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:

  • A
    $\frac{1}{2}$
  • B
    $1$
  • C
    $2$
  • D
    $\frac{3}{2}$

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$1 + 4 \sin \theta + 3 \cos \theta$ ની અંતિમ કિંમતો (extreme values) કઈ છે?

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