AP® Calculus AB-BC

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Moderate

Optimization with Parametric Equations

APCALC-QZZEIM

The position of a particle for $t\geq0$ is given by the parametric equations $x=5\cos{t}$ and $y=2\sin{t}$.

For what value of t in the interval $\left[0, \pi\right]$ is the distance between the particle and the origin the smallest?

A

$t=0$

B

$t=\cfrac{\pi}{4}$

C

$t=\cfrac{\pi}{2}$

D

$t=\cfrac{\pi}{8}$