CPM Homework Banner
12-27.
  1. Multiple Choice: At the points where the limaςon r = 5 − 4 cos θ has a horizontal tangent, the following equation is true: Homework Help ✎

    1. sin θ = 0

    2. 5 sin θ = 4 sin 2θ

    3. 5 sin θ = 2 sin 2θ

    4. 5 cos θ = 2 cos 2θ

    5. 5 cos θ = 4 cos 2θ

This is when dy/ = 0.

You will need to use a double angle identity to rewrite your y = equation or your final answer.