$\sin \theta + \cos \theta$ નું મૂલ્ય ક્યારે મહત્તમ હશે?

  • A
    $\theta = 30^\circ$
  • B
    $\theta = 45^\circ$
  • C
    $\theta = 60^\circ$
  • D
    $\theta = 90^\circ$

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