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## Homework Statement

I have [PLAIN]http://img543.imageshack.us/img543/1608/msp481619fbgebbd2f2fg34.gif [Broken] and [PLAIN]http://img153.imageshack.us/img153/121/msp69719fbh6if8c7b729c0.gif [Broken] as my parametric equations with ''t'' as parameter. How to find its Cartesian equation?

## Homework Equations

## The Attempt at a Solution

I know i have to eliminate the ''t'', but i have no ideas how to eliminate it. Can anyone help me? Thanks...

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