Angle on a Polar Array

I’m trying to build a series of supports (4), arround a cone, and was using Polar Array for that.

90° doesn’t seem to do 90°, and I can’t find the exact angle to get what I want.

Am I doing something wrong here?

Circle Grass.gh (19.1 KB)
Circle.3dm (56.5 KB)

I want to do everything on Grasshopper.
I added an example on the Rhino file about what it could look like

you are working in radians by default. either you switch to degrees by clicking this option or multiply your angle by Pi/180 to convert from deg to radians manually.

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Thank you!