im stuck, i cannot work out how to find position vectors on a line, forexample, i can find the equation of a line, i can prove lines are perp, find angles, prove lines lintersect but i just cannot work out how too find a point on a line
a question im stuck on is q 6 on the examination paper in the back of the c4 book, part b, where it says "find position vector of point P such that OP is perp to AB"
please help rep given if your into that sorta thing
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- 13-06-2006 11:20
- 13-06-2006 11:40
I presume you know AB. Then just consider a general point in terms of lambdas or whatever. Dot with AB and put equal to 0. Solve for lambda.
- 13-06-2006 11:45
thanks man wll give it a crack
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