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OpenStudy (anonymous):
Evaluate the dot product of (-1,2) and (3,3).
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OpenStudy (anonymous):
(-1,2) dot (3,3) = -1*3+2*3 = -3+6 = 3
OpenStudy (anonymous):
use the law of cosines to find the value of cos Round answer to two decimal places A. 1.14 B. 0.21 C. 0.85 D. 0.33
OpenStudy (precal):
well you are missing more information in order to use the laws of cosine
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