can someone show me where the 90 degrees is on this diagram (OPs diagram), so editing the drawing with another colour and reposting?
http://community.boredofstudies.org/attachment.php?attachmentid=27573&d=1359618587
this will make it much clearer, thnx =)
http://community.boredofstudies.org/attachment.php?attachmentid=27573&d=1359618587
this will make it much clearer, thnx =)