ie: in the figure theta 3 i got i want theta 2 what formula would i use
I think it's th2=th1+th3-180
There isn't enough information to tell.
It's basic geometry.
Assuming the line I've drawn is parallel to the x axis
th2 = th3 -th
th = 180 - th1
th2 = th1 + th3 - 180
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