1 First log in to your Facebook account, and click on the drop down arrow at the top right of the screen.
3 Once you are on the Activity Log page, from the left side-bar select more under comments section.
4 Now more options appear on the sidebar click on Friends, then click on Sent friend requests to view all the sent friend requests.
5 Finally, on this page you will find all sent friend requests, all you have to do is to put your Mouse on the friend's name, then click on Sent friend request and select cancel friend request.
That's all, I hope you find this article helpful for you.