ANGLE OF INCIDENCE IS EQUAL TO THE ANGLE OF Reflection

hey is this true even when two balls meet?
is this the right way to get the answer?


To get the final angle:
AngleIncidence = AngleReflection
AngleIncidence = (180° + InitialAngle) - (NormalAngle)
AngleReflection = (NormalAngle) - (FinalAngle)
Solving for FinalAngle:
180 + Init - Norm = Norm - Final
180 + Init - 2 Norm = - Final
Final = 2 * Norm - 180 - Init


is the InitialAngle the angle between the two balls and if so does it matter if i get the angle from A to B first or B to A first?



i have the angle between B and A of 134 by 314 degrees when touching each other

ball B is moving at 23 degrees
ball A is moving at 229 degrees

how do i get the right reflextion angle for each ball?

thanks verry much