Question

If sides A and B of a triangle have lengths of 1 and 6 respectively, and the angle between them is `(7pi)/8`, then what is the area of the triangle?

Answer 1

`"Area of the triangle"=1/2ABsin(7pi/8)`

`=1/2*1*6*sin(pi-pi/8)`

`=3*sin(pi/8)=1.148squnit`