November 2019 1 26 Report
Diketahui cos \: A = - \frac { 3}{5} dan sin \: B = \frac{5}{13} . Jika sudut A,B adalah sudut tumpul, maka sin (A+B)=...
(A) - \frac{63}{65}
(B) - \frac{43}{65}
(C) \frac{23}{65}
(D) \frac{43}{65}
(E) \frac{63}{65}

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