Asked by Sarah
What is the angle between the vectors A and B if vector A multiplied by vector B = 0.5 AB
Answers
Answered by
Damon
assume you mean dot or scalar product
A dot B = |A| |B| cos theta
so here cos theta = .5
cos^-1 0.5 = 60 degrees
A dot B = |A| |B| cos theta
so here cos theta = .5
cos^-1 0.5 = 60 degrees
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