Question

I need help lol with this problem pls help pls pls pls

Answer 1

Explanation:

For this triangle, since the angle is included between 2 given sides, the formula will be:

`A =(1)/(2)ab*ac*sin(angleA)`

Putting values where they belong:

`A=(1)/(2)(10)(12)sin72`

Do all that in your calculator (in degree mode, NOT radian!) to get

A = 57.1 square cm