Question

Find prea of triangle whose, vertices are
(-2,-3) (3.2) and (-1,-8) using determinant
method​

Answer 1

Answer:

15 unit²

Step-by-step explanation:

From the given information

x1=-2 x2=3 x3=-1

y1=-3 y2=2 y3=-8

Area of triangle=1/2 |x1(y2-y3)+x2(y3-y1)+x3(y1-y2)|

=1/2 |-2(2+8)+3(-8+3)-1(-3-2)|

=1/2|-2(10)+3(-5)-1(-5)|

=1/2|-35+5|

=1/2|-30|

=30/2

=15 unit²