Answer :


well it depends what angle is missing, because from their you use sine, Tan and cos...if you can give me some more information, maybe I can help you better
AL2006
Just like any other math problem . . . Use the information you have, and the math you know, to find the missing information. . . . For example . . . If you have 3 of the angles, and you know that the angles of ANY 4-sided figure add up to 360 ddgrees, you can put that knowledge together to find the missing angle.