drag z₁ and z₂ · product angle = sum of angles · see rotation + scaling · runs locally
z₁0.800 + 0.600i
|z₁| = 1.000 · arg = 36.9°
|z₁| = 1.000 · arg = 36.9°
z₂0.500 + 0.860i
|z₂| = 0.995 · arg = 59.8°
|z₂| = 0.995 · arg = 59.8°
z₁ × z₂-0.116 + 0.988i
|·| = 0.995 · arg = 96.7°
|·| = 0.995 · arg = 96.7°
arg(z₁z₂) =36.9°+59.8°=96.7°· |z₁z₂| = |z₁| × |z₂| =0.995