If sides A and B of a triangle have lengths of 1 and 2 respectively, and the angle between them is #(5pi)/8#, then what is the area of the triangle?
A = 0.924
Remember that the equation for finding the area of a triangle is
1/2 ab sinC
So in this case the area is equal to: 1/2x1x2xsin(5
Which simply becomes sin(5
Formula for area of triangle = (1/2) b c sin A, knowing two sides and the included angle.