Question

The general form for a limacon is `r=a+bcostheta` or `r=a+bsintheta`. When will a limacon have an inner loop?

Answer 1

When `a < b` , The limacon will have inner loop.

Explanation:

When `a < b` , the polar graph will produce limacon with inner loop. Example:
`r=2+3 sin theta` will produce inner loop in a limacon. [Ans]