Cecil Moore wrote:
A 2 amp phasor
at zero degrees added to a 2 amp phasor at zero degrees equals 4 amps at
zero degrees, flowing in the same instantaneous direction as the instantaneous
phasor components.

Above lies the semantic nonsense. You've got 2 amps, alternating in
both directions, plus another two amps that alternate in both
directions, which equals 4 amps alternating in both directions. The
number 4 is only true at a particular location and instant of time.

When the two component phasors are at 180 degrees, they
and their sum are flowing in the opposite direction.

Semantic nonsense, plus Pi radians.

73, Jim AC6XG