(9,a) (6,7) (2,3) are the coordinates of the vertices of a triangle .if the area of he triangle is 10 find a
Answers
Answered by
24
1\2(x1(y2-y3)+x2(y3-y1)+ x3(y1-y2)
1\2(9(7-3)+6(3-a)+2(a-7)
1\2(36+4-4a)
40-4a=20
a=5
1\2(9(7-3)+6(3-a)+2(a-7)
1\2(36+4-4a)
40-4a=20
a=5
Answered by
7
Answer:
1\2(x1(y2-y3)+x2(y3-y1)+ x3(y1-y2)
1\2(9(7-3)+6(3-a)+2(a-7)
1\2(36+4-4a)
40-4a=20
a=5
Explanation:
Similar questions