Question

How do you find the intervals of each loop of the polar equation `r=3cos5θ`?

Answer 1

Set `5theta = 2pi`;
Then the intervals would be
`theta = (2pi)/5`
`try 0, 2pi/5, 4pi/5, 6pi/5, 8pi/5, 10`

Explanation:

See answer it is self evident!