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tan*2x-sin*2x=sin*2xtan*2x

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Questions typed like yours were posted yesterday by "sarah"
http://www.jiskha.com/display.cgi?id=1268184722

Both Bob and I answered one of them.

you probably meant to type
tan^2 x - sin^2 x = (sin^2 x)(tan^2 x)

Please verify.
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