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April 19, 2014

Homework Help: precalc

Posted by anna on Monday, February 21, 2011 at 4:51pm.

If is vector a ia 7 units long, the magnitude of vector b is 10 units and the cosine of the angle between the two vectors is -0.3 when they are placed tail-to-tail, what does the inner product of vector a and vector b equal?

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