Polar Coordinates

• Parametric Curve of $C : \begin{cases} \displaystyle r=\frac{2}{\cos t} \\ \displaystyle \theta= t \end{cases} , \displaystyle - \frac{\pi}{2} < t < \frac{\pi}{2}$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=\frac{2}{\sqrt{\cos t \sin t}} \\ \displaystyle \theta= t \end{cases} , \ 0 < t < \displaystyle \frac{\pi}{2}$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=\frac{1}{\sqrt{\cos^2 t -\sin^2 t}} \\ \displaystyle \theta= t \end{cases} , \ \displaystyle -\frac{\pi}{4} < t < \frac{\pi}{4}$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=\frac{1}{1-2\cos t } \\ \displaystyle \theta= t \end{cases} , \ \displaystyle \frac{\pi}{3} < t < \frac{5\pi}{3}$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=1-\cos t \\ \displaystyle \theta= t \end{cases} , \ 0 < t < 2\pi$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=6\sin t \\ \displaystyle \theta= t \end{cases} , \ 0 < t < 2\pi$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=-\frac{4}{\cos t} \\ \displaystyle \theta= t \end{cases} , \ \displaystyle -\frac{\pi}{2} < t < \frac{\pi}{2}$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=4\cos t \\ \displaystyle \theta= t \end{cases} , \ 0 < t < 2\pi$

  [영상(YouTube)] [AlgeoMath]

• Parametric Curve of $C : \begin{cases} \displaystyle r=\frac{4}{2\cos t -\sin t} \\ \displaystyle \theta= t \end{cases} , -\pi+\arctan 2 < t < \arctan 2$

  [영상(YouTube)] [AlgeoMath]