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Vectors in a triangle watch

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    So i have a triangle with the values:OA= a OB = bAB= -a+b The point B devides AB and BC in the ratio 2:3 Work out vector OC in terms of a and b simplify your answer
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    (Original post by Juan55613)
    So i have a triangle with the values:OA= a OB = bAB= -a+b The point B devides AB and BC in the ratio 2:3 Work out vector OC in terms of a and b simplify your answer
    Is it possible to send a pic of the triangle with the corners labelled?
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    Is this mathswatch lmao? All my friends are sending me this question :/

    Anyways my solution:

    Given AB = 2/5 AC & AB = b-a

    It follows that AC = 2.5b-2.5a (by simple algebra)

    So OC = OA + AC = a + 2.5b-2.5a = 2.5b-1.5a.
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    (Original post by thekidwhogames)
    Is this mathswatch lmao? All my friends are sending me this question :/

    Anyways my solution:

    Given AB = 2/5 AC & AB = b-a

    It follows that AC = 2.5b-2.5a (by simple algebra)

    So OC = OA + AC = a + 2.5b-2.5a = 2.5b-1.5a.
    thank you, i was trying to use a different approach by trying to go from OB+BC to get to OC, but this method seems more simple and understandable
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    (Original post by Juan55613)
    thank you, i was trying to use a different approach by trying to go from OB+BC to get to OC, but this method seems more simple and understandable
    Np, you in year 11?
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    (Original post by thekidwhogames)
    Np, you in year 11?
    yeah, I am
 
 
 
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