Problem #3
The diagram shows an obtuse triangle
ABC with AB = 57 cm, AC = 48 cm and
BÂC=117 degrees
Calculate:
a the length BC
(3 marks)
b the area of triangle ABC (2 marks)
c the size of the angle ABC. (3 marks)

Problem 3 The diagram shows an obtuse triangle ABC with AB 57 cm AC 48 cm and BÂC117 degrees Calculate a the length BC 3 marks b the area of triangle ABC 2 mark class=