**A = 6**

a = 6

t = 6

δ = 90°

B = 6

b = 6

Lissajous curves are graphic patterns that can be obtained through the parametric equations:

x(t) = A sin(at+δ), y(t) = B sin(bt)

The curves describe harmonic vibrations. They were first discovered by Nathaniel Bowditch and later investigated by Jules Antoine Lissajous.

x=A sin(at+δ)

y=B sin(bt)