I know how to change a rectangular equation into a parametric one but can't do it vice versa.
An example is: (x+2)^2/25-(y-5)^2/12=1
except that its centre has been moved from the origin to .
We use trig functions to write equations like this in parametric form. In this case we can use the fact that , by writing:
You'll see that if you eliminate between these two equations you get:
So, using the above trig identity: