I'm close, but I'm not sure why this is stumping me!
I want the yellow box to Sine Forward/Back but be "pinned" to the edge of the blue box as it spins.
it starts out correct but then it sines in the wrong direction.
Your equation is wrong
To get angle-distance do CenterX + distance_from_center * cos(angle)
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— ahh thank you! I knew I was close..