# 7.1: Polar Necessities

Difficulty Level:

**At Grade**Created by: CK-12
*This activity is intended to supplement Trigonometry, Chapter 6, Lesson 4.*

## Plotting Coordinates & Exploring Polar Graphs

The coordinates of a polar curve are given as .

1. Plot and label the following points on the graph below: and .

2. If , what is ?

3. Graph . What is the shape of the graph?

4. Using your graphing calculator, explore polar graphs by changing the equation from #3. Try to generate the graphs listed below. Which of the graphs were you able to make? Write the equation next to the graph shape.

- circle
- rose with even number of petals
- rose with odd number of petals
- limaçon with an inner loop

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## Date Created:

Feb 23, 2012## Last Modified:

Nov 04, 2014
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