I’m working through some maths questions and this one has me stumped. It is as follows: “The perimeter of triangle ABC = 15cm, given AB = 7cm and angle BAC = 60 degrees, find the lengths of AC and BC and the area of the triangle. If this was a right angled triangle then it’d be easy, but I’m not sure how to get the other sides if only one side, one angle and the perimeter are defined. Thanks!