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OpenStudy (anonymous):
I need to write an equation that relates tan (x) and tan (-x)
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OpenStudy (solomonzelman):
well, there is a rule tan(-x)=-tan(x)
OpenStudy (dls):
\[\Huge \tan(x) + \tan(-x)=0\]
OpenStudy (solomonzelman):
duh :)
OpenStudy (solomonzelman):
They are additive inverses of each other
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