### Home > APCALC > Chapter 9 > Lesson 9.2.2 > Problem9-69

9-69.

Convert the following sets of parametric equations into rectangular form (in terms of $x$ and $y$).

1. $x = \cos(t)$ and  $y = \sin(t)$

2. $x = \cos(2t)$ and $y = \sin(2t)$

3. $x = t^4 - 3t^2$ and $y = t^2$

$\sin^2(x) + \cos^2(x) = 1$