## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$(0,3.8)$
It is known that the coordinate on the $x$-$y$ plane for an angle $\theta$ from the horizontal and a radius $r$ is $(rcos\theta,rsin\theta)$. Using $r=3.8$ and $\theta=90^\circ$ gives a point $$(3.8cos(90^\circ),3.8sin(90^\circ))=(0,3.8)$$