Asked by Linda
Find the area of the parallelogram determined by the vectors v and w where v=2i+3k and w=2j-3k. Area?
If a=i+1j+k and b=i+5j+k, find a unit vector with positive first coordinate orthogonal to both a and b. _i+_j+_k?
If a=i+1j+k and b=i+5j+k, find a unit vector with positive first coordinate orthogonal to both a and b. _i+_j+_k?
Answers
Answered by
Steve
the area is |<b>v</b>x<b>w</b>|
recall that <b>a</b>x<b>b</b> is perpendicular to both <b>a</b> and <b>b</b>
recall that <b>a</b>x<b>b</b> is perpendicular to both <b>a</b> and <b>b</b>
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