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

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

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Tasneem Almond

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 $$\displaystyle{r}{\cos{\theta}}={7}$$