## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter 6 - Section 6.3 - Polar Coordinates - Exercise Set - Page 744: 102

#### Answer

$\left( 8.674,-2.090 \right)$

#### Work Step by Step

To determine the polar coordinate from the rectangular coordinate, follow the following steps: Step I: Press 2nd and then press the APPS key to open Angle Menu. Step II: Press 5. Step III: Enter the point $\left( x,y \right)$ and press enter to display r in the $\left( r,\theta \right)$ rectangular form of the point. Thus, $r=8.674$ Step IV: Follow Step I and Step II and then press 6. Step V: Enter the point $\left( x,y \right)$ and press enter to display $\theta$ in the $\left( r,\theta \right)$ polar form of the point. Thus, $\theta =-2.090$ Hence, the polar coordinate of $\left( -4.308,-7.529 \right)$ is $\left( 8.674,-2.090 \right)$.

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