Question

Can someone please help me with the formula for the area of a triangle?

Answer 1

`A = 1/2ab sinC`

Explanation:

This is simply a case of learning the correct formula for the area of a triangle.

You need to have the combination of three facts as
'Two sides and the included angle,"

Angle `C` lies between sides `a and b` and is therefore the included angle.

The correct formula is

`A = 1/2ab sinC` which is the last option offered,

Answer 2

The 5. answer

Explanation:

`A=1/2*h_b*b`
`h_b/a=sin(C)|*a`
`h_b=a*sin(C)`

`A=1/2a*b*sin(C)`