Given a triangle with two known vertices and the angle, get the coordinates of the last vertex I have tried attaching an image of the triangle I am working with but since I am a new user this site will not let me post images (kind of defeats the purpose, but anyways).
I have the following triangle:
Point A = (x:40, y:100)
Point B = (x:50, y:50)
Point C = ??
d = 20 degrees (which is the angle between vectors BA and CA.
I am tring to find out the coordinates of Point C.  I have tried using the law of cosines and scoured the net looking for a close example that I can learn from and figure out why I can't get the correct formula for this.
Can any one please lend a hand in figuring out this formula.
Thank you!

Just to repeat what everyone has told you: what you have stated in the question is not enough information about C. Here's a picture:

