if A(3,8)B(4,-2)C(5,-1)are the vertices of AAC
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Step-by-step explanation:
Step-by-step explanation:
Given : A(3,8), B( 4, - 2) and C( 5, -1)
Area of Triangle ABC,
= 1/2[X1(y2-y3)+X2(y3-y1)+x3(y1-y2)]
= 1/2[3{-2-(-1)}+4{-1-8}+5{8-(-2)}]
= 1/2[3(-2+1)+4(-9)+5(8+2)]
= 1/2[3(-1)+4(-9)+5(10)]
= 1/2[-3-36+50]
= 1/2[11]
= 11/2 Sq. unit.
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