Observe the graph :
The graph consists of all points on the line that make an angle of with the positive polar axis, or ordered pairs of the form , where is any real number.
One equation that matches this description is .
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c0a721ac18918172830f71c3b4f0c6ea.png\")
with the positive polar axis, or ordered pairs of the form ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=88197ccb56c4b153d0154b0f3ef5b248.png\")
, where ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cc9bb0729dc9c8bf32a7cdd2a48bca93.png\")
is any real number.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=78e58fd582d601e25180083db119c261.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=78e58fd582d601e25180083db119c261.png\")
.