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secondary 3 | A Maths
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Qn 7 pls help!!!! Urgent!!! Thank you!!
Date Posted: 6 years ago
Views: 460
If you have 3 points of a triangle, you can use the following formula:
Area= |x1(y2-y3) + x2(y3-y1) + x3(y1-y2)|/2
Let A, B and C be associated with 1 2 and 3. Substituting the coordinates will leave the unknown "k" in the modulus bracket. You then solve for both positive and negative values of area to get 2 different values of k
K = 0, k= 6
For part B, find the length of AB and use the area formula area of
Area= |x1(y2-y3) + x2(y3-y1) + x3(y1-y2)|/2
Let A, B and C be associated with 1 2 and 3. Substituting the coordinates will leave the unknown "k" in the modulus bracket. You then solve for both positive and negative values of area to get 2 different values of k
K = 0, k= 6
For part B, find the length of AB and use the area formula area of
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Date Posted:
6 years ago
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