## anonymous 5 years ago what would t be equal to if x=3cost? t=arccos(x/3)?

1. anonymous

That sounds right.

Awesome :)

4. anonymous

ok thank you very much im doing parametrics right now:/

Sucks :|

6. anonymous

to find the acceleration vector of $x=\sqrt{t}$ and $y=3t ^{2}-2t$ when t=1 would you just take the derivative of both x and y twice?