# Replace the Cartesian equation with equivalent polar equations. x = 7

Replace the Cartesian equation with equivalent polar equations. x = 7

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liannemdh
The given Cartesian equation is x=7
$$\displaystyle{x}={r}{\cos{\theta}},{y}={r}{\sin{\theta}}$$
To replace Cartesian equation with equivalent polar equations as follows,
Cartesian equation =x =7.
Equivalent polar equation =$$\displaystyle{x}={r}{\cos{\theta}}$$
Substituting x =7,$$\displaystyle{x}={r}{\cos{\theta}}$$
Therefore, the equivalent polar equation is $$\displaystyle{r}{\cos{\theta}}={7}$$