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OpenStudy (anonymous):
Show that V= 3i + 6j and W = -8i+4j are perpendicular
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OpenStudy (anonymous):
if they are perpindicular then their dot product is 0
OpenStudy (anonymous):
take the dot product of v and w, if it is 0 then they are orthogonal
OpenStudy (anonymous):
is it always 0 ? if it is perpendicular*
OpenStudy (anonymous):
yes, if two vectors are perpendicular, their dot product will always be zero
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