જો $\sin A = \frac{4}{5}$ અને $\cos B = -\frac{12}{13}$ હોય,જ્યાં $A$ અને $B$ અનુક્રમે પ્રથમ અને ત્રીજા ચરણમાં આવેલા હોય,તો $\cos(A + B) = $

  • A
    $\frac{56}{65}$
  • B
    $-\frac{56}{65}$
  • C
    $\frac{16}{65}$
  • D
    $-\frac{16}{65}$

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