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OpenStudy (anonymous):
If |u| = 10, |v| = 8, and the angle formed between them is 60°, then u · v = ___?
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OpenStudy (jhannybean):
\[\vec u \cdot \vec v = |\vec u||\vec v|\cos(\theta)\]
OpenStudy (jhannybean):
Plug in all your givens and solve
OpenStudy (anonymous):
10*8*0.5
OpenStudy (anonymous):
40?
OpenStudy (anonymous):
yeap
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OpenStudy (anonymous):
thank you
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