A triangle has sides A, B, and C. Sides A and B have lengths of 1 and 5, respectively. The angle between A and C is 7π24 and the angle between B and C is 5π24. What is the area of the triangle?

1 Answer
Dec 30, 2016

The area of the triangle is 2.5 sq.unit

Explanation:

The angle between sides AandC is b=7π24=52.50
The angle between sides BandC is a=5π24=37.50
The angle between sides AandB is c=180(52.5+37.5)=900
The area of the triangle with sides A=1,B=5 and their included angle c=900 is At=absinc2=15sin902=52=2.5sq.unit[Ans]