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

$(3.571,-1.300)$
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 $\theta=-20^\circ$ gives a point $$(3.8cos(-20^\circ),3.8sin(-20^\circ))=(3.571,-1.300)$$ (Use a calculator to estimate those values. Make sure the calculator is on degree mode.)