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**i**sin(wt) +

**j**cos(wt)) where w is constant. I took two derivatives to find it's acceleration. I got a(t) = -rw^2(

**i**cos(wt)+

**j**sin(wt)). Now I'm stuck. How the heck and I getting rid of those trig functions? Thanks.

-Dan

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-Dan

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atyy

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