What do the parametric equations x = 7 cos(t) and y = 3 sin(t) describe?
A) ellipse
B) hyperbola
C) circle
D) parabola
E) line

Question

Quizplus · Accepted Answer

These equations describe an ellipse. This can be seen by rearranging them into the standard form of an ellipse equation, $\frac{x^2}{7^2} + \frac{y^2}{3^2} = 1$, where the coefficients of $x^2$ and $y^2$ are the squares of the radii in the x and y directions, respectively.

What Do the Parametric Equations X = 7 Cos(t) and Y