Which expression is equal to sin(A−B)\sin(A-B)sin(A−B)?
sinAcosB−cosAsinB\sin A \cos B - \cos A \sin BsinAcosB−cosAsinB
sinAcosB+cosAsinB\sin A \cos B + \cos A \sin BsinAcosB+cosAsinB
cosAcosB+sinAsinB\cos A \cos B + \sin A \sin BcosAcosB+sinAsinB
cosAcosB−sinAsinB\cos A \cos B - \sin A \sin BcosAcosB−sinAsinB