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anonymous

  • one year ago

please helpp... question in comments

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    @phi

  3. phi
    • one year ago
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    An equation for a line using vectors uses this idea: we have a "direction vector" that we can "travel along" in the direction of the line. To find this direction vector, define B-A (this will give you a vector that points in the correct direction) then add a "starting point" A P= A + t(B-A) where t is a scalar that lets us move along the line. Use the definitions of vector A and B in that expression.

  4. anonymous
    • one year ago
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    its okay for part (i) what for second part ?

  5. phi
    • one year ago
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    the vector P (tail at the origin, head at point P) is perpendicular to the "direction vector" B-A

  6. phi
    • one year ago
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    can you figure it out or do you want more info?

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