### convert parametric equations to a normal one

I solved my problem into parametric equations as shown below:

`x == `~~3/4~~*sqrt(2*m^2 3/4*sqrt(2*m^2 + ~~2)~~*m/(m^2 **2)*m/(m^2 + 1), y == *~~1/4~~sqrt(2*m^2 1/4*sqrt(2*m^2 + 2)/(m^2 + ~~1) ~~

```
1)
```

But I meet difficult on how to convert into a normal ~~one. So my problem may be described as: ~~one, I want to get an equation with `x, y`

only. For another general description: is there any function will help ~~solve~~

solve parametric equations into a normal one like solve:

`x == cos(theta), y == sin(theta)`

` `

` `into

` `

~~ ~~into

`x ^ 2 + y ^ 2 == 1`

. I learned how to solve it with my pen, but I want a solution with Sage code.

~~ ~~

Thanks.