Question

How do you find the area of `triangle ABC` given `A=138^circ, b=10, c=20`?

Answer 1

`66.91sq.units(4dp).`

Explanation:

The Area of `Delta ABC=1/2bcsinA=(1/2)(10)(20)sin138^@`

`~~(100)(0.6691)=66.91sq.units(4dp).`