$\sin 15^\circ + \cos 105^\circ = $

  • A
    $0$
  • B
    $2\sin 15^\circ $
  • C
    $\cos 15^\circ + \sin 15^\circ $
  • D
    $\sin 15^\circ - \cos 15^\circ $

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નીચેનામાંથી કયો સંબંધ શક્ય છે?

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