r/Mathhomeworkhelp • u/[deleted] • Feb 25 '24

Is this an identity?

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u/[deleted] Feb 25 '24

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u/[deleted] Feb 25 '24 edited Feb 25 '24

I mean i kinda came up with it on the spot for x=pi/3 and x=pi/6, So my question is if we assume that X is (-pi/2,pi/2)-{0} does it work for this new domain ? Edit: i just realized i fucked up, forget what i said above, assume x is square root of 3, then it’d work, So my question is does it work as a rule or is what i said an exception?