Simplify the expression in terms of sine and cosine.
tan^2(x)[cos2x+(sin^2(x)+cos^2(x))-1]
[spoiler]It's 3sincos-sin^3/cos
I know, not much of a simplification.[/spoiler]
English
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I just learned about this a month or two ago.
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No is -5 there I help with math u welcome