SymmetryRunning
Reflection deck. Mirror line position at 2.88 m. Original + reflection 5.76 m, Required span 34 m. Currently original + reflection is short by 28.24 m.TUNINGINCIDENTREFLECTED2.88 M
t = 0.0s

Original + reflection

5.76m

Required span

34m

2.88 m

Reflection deck. Mirror line position at 2.88 m. Original + reflection 5.76 m, Required span 34 m. Currently original + reflection is short by 28.24 m.

What has to balancex=2axx' = 2a - x

What is happening

You are called to a stage lighting rig being mirrored to the opposite wing.

The mirrored fixture lands in the wrong place. The original sits at position 8, its mirror must land at 26, and the mirror line is set wrong.