- #1
thomas49th
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Homework Statement
I'm awful with vectors. I know the dot product rule and the uses to find perpendicular vectors and angles. I know about multiplying vectors (a1b1 + a2b2 + a3b3). I know vector arithmetic.
But i can't do:
r = 8i + 12j + 14k + t(i + j - k)
where t is a parameter
The point A has co-ordinates (4,8,a), where a is a constant. The point B has co-ordinates (b,13,13), where b is a constant. Points A and B lie on the line l1.
a) Find the values a and b
Homework Equations
The Attempt at a Solution
Well i presume i need to find the parameter t first... how? I don't have enough information do i?
thanks :)