In SOLIDWORKS 2014 to make a line and an arc tangential, you
had to select both sketch entities. Now in 2015 you can simply select the
common vertex and the same sketch relations are presented. This is true of any
sketch geometry that shares a common vertex.
This is a fairly subtle enhancement, but it definitely saves
a lot of time when adding Sketch Relationships manually.
By Jon Weston-Stanley
View the Video here