A triangle has sides A, B, and C. Sides A and B have lengths of 4 and 5, respectively. The angle between A and C is (7pi)/8 and the angle between B and C is (pi)/12. What is the area of the triangle?

1 Answer
Jul 20, 2017

"area " ~~1.305" square units"

Explanation:

"the area ( A) of the triangle is calculated using"

•color(white)(x)A=1/2ABsinC

"where " C" is the angle between A and B"

rArrangleC=pi-((7pi)/8+pi/12)=pi/24

rArrA=1/2xx4xx5xxsin(pi/24)

color(white)(rArrA)~~1.305" square units"