Given the polar equation $r=7\cos \left(\theta \right)$, which of the following is the corresponding Cartesian equation?

Given the polar equation $r=9\cos \left(\theta \right)$, which of the following is its equivalent Cartesian equation?

Find the exact length of the polar curve $r=2$ for $0\le \theta \le 2\pi$.

Which of the following correctly expresses the conversion from rectangular coordinates $(x,y,z)$ to cylindrical coordinates $(r,\theta ,z)$?

Given the polar equation $r=5\cos \left(\theta \right)$, which of the following is its Cartesian equation?

Which of the following is a polar equation for the curve represented by the Cartesian equation $x^2+y^2=3$?

Plot the point on the polar coordinate system.

$(5,210°)$

Plot the point on the polar coordinate system.

$(-3,-90°)$

Plot the point on the polar coordinate system.

$(6,-\frac{11\pi}{6})$