followmytwitter
rewrite with only sin x and cos x
sin 2x cos x
help?



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itsmylife
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sin2x=2 sin x * cos x
put it in there and get the results ;)

followmytwitter
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wait so I plug in for x

followmytwitter
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@itsmylife

followmytwitter
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the sin2x

itsmylife
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no put sin 2x = sinx * cos x

followmytwitter
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2 sinx  cos^2x?

followmytwitter
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@itsmylife

itsmylife
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nope

followmytwitter
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hmmm

itsmylife
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2 sinx cos x  cos x
cos x (2 sin x 1)

followmytwitter
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oh sweet thx

itsmylife
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np ;)