![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The complex number z = 4.
\Compare the complex number with a + ib.
\a = 4 and b = 0.
\The absolute value of z is :
\ ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f96e57c72ea4ba7d94d4c2c6a0856cd3.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
a = 4 > 0, so the angle is :
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2421231882595920c09e195658b356e4.png\")
The trigonometric form is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ce991cb7e499487a521c9a1a8d7d8a0c.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd1c90f9750713e3fc8325be3d88ada9.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step3.JPG\")
The complex number is plotted as an absolute value of 4.
\![\"The](\"/userfiles/image/Library/Trigonometry/The_complex_number_minus_4.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The trigonometric form is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd1c90f9750713e3fc8325be3d88ada9.png\")
.