why did the -sin^2(x) change into -1 + cos^2x?
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i don't get it
Originally Posted by asilvester635 i don't get it
Do you get that if then
It's a basic trig identity that by now, (judging by what you are doing), you should be familiar with.
It can be rewritten as
yah i forgot its a trig identity.. thanks anyways
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