Question

Given: △ABC,

m∠B=120°
AB=6, BC=10
Find: Area of △ABC

Disclaimer: Its not 30

Answer 1

we are given

△ABC

we can use area of triangle formula

`A=(1)/(2) AB*BC*sin(B)`

we have

AB=6

BC=10

m∠B=120°

so, we can plug it

`A=(1)/(2) 6*10*sin(120)`

`A=(1)/(2) *60*(√(3) )/(2)`

`A=15√(3)`..............Answer