Can someoneone help me to explain how to do it by given the complete solution.
1) Find a unit vector that is orthogonal to a and b where
a = 9 i - j - 2 k and b = -5 i + 2 j - 7 k .
2) Consider the line passing through the point P, whose position vector is -5 i + 10 j, and parallel to the vector -3 i - 4 j. Find a cartesian equation for the line.
3) Find the position vector of the point of intersection of lines L1, L2 with vector equations intersecting, where
L1: r = -2 i - 5 j + s (7 i + j)
L2: r = -4 i + 10 j + t (- i - 7 j)
2006-08-09
19:56:05
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2 answers
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asked by
joe_is_here86
1
in
Mathematics