Chapter 11.3, Problem 9QR

The curve r = VI + sin20,

Eliminate the parameter in the parametric equations x =7+ sint, y = 2 + sint, for 0sts and describe the curve, indicating its positive orientation. How does this curve differ from the curve x = 7+ sin t, y = 2 + sin t, for 7stsn?

Consider the curve defined by the parametric equations X = cos t, y = 3sec t on the interval 0sts"/2, Eliminate the parameter, t, to find a Cartesian equation for this curve. Use the equation editor to enter your answer in correct mathematical form.