parametric equations part 1: https://www.youtube.com/watch?v=bTNs25ePZcI
parametric equations part 2: https://www.youtube.com/watch?v=MGj8Hp6XEro
parametric equations part 3: https://www.youtube.com/watch?v=7JhviAyFQ2c
parametric equations part 4: https://www.youtube.com/watch?v=CUR0KAmZAu8
parametric equations part 5: https://www.youtube.com/watch?v=RVjpmT60kgc
polar equations part 1: https://www.youtube.com/watch?v=HWYr0JKl4qk
polar equations part 2: https://www.youtube.com/watch?v=Z0F2zFx46Bk
polar equations part 3: https://www.youtube.com/watch?v=3nmIiF2XwaQ
polar equations part 4: https://www.youtube.com/watch?v=IQ3oa7fr4jc
polar graphs part 1: https://www.youtube.com/watch?v=KSI7WX7nRHg
polar graphs part 2: https://www.youtube.com/watch?v=POJ09Btv_TY
polar graphs part 3: https://www.youtube.com/watch?v=j8WxMCMf6wo
polar graphs part 4: https://www.youtube.com/watch?v=aTkaDS79SrE
polar graphs part 5: https://www.youtube.com/watch?v=GpVadwcpu_Y
polar graphs part 6: https://www.youtube.com/watch?v=CL_031HejLo