Use the sine law.
Here is the problem: You have a triange (no right angle anywhere in sight) They (my math teacher) gives you the angle 76 degrees. They give you an angle with 53 degrees. They give you side "w", which is opposite the angle 76. Finally they give you a side length of 25.
To find W I thought I would have to either use the law of Cos or the law of Sin.