rotating an object maths.


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By frank_461853 - 4 Years Ago
i am trying to orbit a light by 90 debrees on the x axis
the line to do it is 
 transform.R().x =0.7071067690849304
I am no mathematician so i do not understand how  .x =0.7071067690849304
it is not in radians or pi/4. what is it?