Question

find the ares of triangle whose the ventic of A (1,-1 ) ,B(-4,6) C ( -3,5 )​.​

Answer 1

Answer:

sorry

Step-by-step explanation:

1/2=

$1 \div 2 = \sqrt{x1(y - y3) + x2(y3 - y1) + x3(y1 - y2)}$

its formula and answer will be 1/2 =√3