The initial point is .
The terminal point is .
Component form of is .
Magnitude of is .
Choice A is correct.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6d117332026a5367dd7e624c5e3c78fa.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ab27371efa468ec8d1f29420d674eef5.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7cea237c4bf0991b368a2bf19e48c42.png\")
is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=51a151d216dd2491de8f5689d5706464.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7cea237c4bf0991b368a2bf19e48c42.png\")
is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3c963d15baae274594e24472cece5566.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")