/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: logamc https://cdn.slidesharecdn.com/profile-photo-logamc-48x48.jpg?cb=1523564932 Life is like (sin 90) = 1 Love is like (cos 90) = 0 But..... Friendship is like (tan 90) = infinity !!!!!!!! There is no value in this world...... Friendship forever !!!