How would I find a Cartesian equation for r = 4secx?
Thanks.
Hello, Shadow236!
$\displaystyle \text{How would I find a Cartesian equation for: }\: r \,=\, 4\sec\theta\,?$
I will assume you know the conversion identities.
We have: .$\displaystyle r \:=\:\frac{4}{\cos\theta} \quad\Rightarrow\quad r\cos\theta \:=\:4 \quad\Rightarrow\quad x \,=\,4$