# Intro to parametric curves

1. Mar 30, 2008

### silicon_hobo

1. The problem statement, all variables and given/known data
Identify and sketch the curve represented by the parametric equations:

$$x=1+cost$$
$$y=1+sin^2t$$

2. Relevant equations
3. The attempt at a solution
I have to isolate t in one of these equations and sub whatever t equals into the other equation right? So how do I get rid of the cos on the left here? I'm not so quick with this trig stuff :?

$$cost=x-1$$
Thanks.

2. Mar 30, 2008

### Dick

cos(t)=x-1. Now just remember cos(t)^2+sin(t)^2=1.