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OpenStudy (anonymous):
Find II 2e-3f II assuming that e & f are unit vectors such that II e +f II=sqrt(3/2).I tried using the law of cosines but not getting it...
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OpenStudy (beginnersmind):
Draw e+f, and solve for the angle.
OpenStudy (beginnersmind):
Do you need another hint?
OpenStudy (anonymous):
not yet, doing math & watching my 3year old and 1 year old sister is interesting...makes solving problems kind of slow...i'll post if i need another hint thanks!
OpenStudy (beginnersmind):
Ok, sometimes people get stuck but don't speak up until you ask :(
OpenStudy (anonymous):
why am I finding the theta between e & e+f....theta=e dot e+f / sqrt(3/2)...
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OpenStudy (beginnersmind):
You need theta between e and f.|dw:1335665267401:dw|
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