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zordoloom Group TitleBest ResponseYou've already chosen the best response.0
That would be true. It' an identity.
 one year ago

checkoutmymath Group TitleBest ResponseYou've already chosen the best response.0
It's not an identity. Does tan^2x = 1(cos2x/1)? I'm certain it doesn't. It does, however, equal to (1cos2x)/2. This is an example of a halfangle identity.
 one year ago

Jnlucero Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{ 1\cos 2x }{ 1+\cos 2x }=\frac{ 1(12\sin^2x) }{ 1+(2\cos^2x1) }=\frac{ 2\sin^2x }{2\cos^2x }=\tan^2x\]
 one year ago

Jnlucero Group TitleBest ResponseYou've already chosen the best response.0
so its true.
 one year ago

Spectrum Group TitleBest ResponseYou've already chosen the best response.0
um 0.0 :/
 one year ago

Jnlucero Group TitleBest ResponseYou've already chosen the best response.0
something wrong?
 one year ago

Spectrum Group TitleBest ResponseYou've already chosen the best response.0
you guys are confusting me 0.o true or no?
 one year ago

Jnlucero Group TitleBest ResponseYou've already chosen the best response.0
the first i did was to use the double angle formula for sine and cosine. then it was simplified, then since the ratio of sine and cosine is tangent, then the next step is obvious.
 one year ago
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