Trig help. finding angles of triangle.

[s-bot-22]

hey. so I have a problem where I have the lengths of all sides and the angle of one side of a triangle and with that I need to find the remaining 2 angles. how do I go about finding these 2 angles?

 

[Some1]

You can use the formula:

where a, b and c are the lengths of the sides and A, B and C are the angles opposite the respective sides (so A is opposite to a etc...).