Find the EXACT value of sin (A + B) if sin A = 3/8, cos A = sqrt(55)/8, sin B = 6/7, and cos B = sqrt(13)/7.
sin (A + B) =
sinAcosB + sinBcosA =
(3/8)(√13 / 7) + (6/7) (√55 / 8) =
[3√13 + 6√55] / 56
