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3psilon
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Two vectors A and B have magnitudes of 6m and make an angle of 60 degrees with each other. Find A DOT B.
 one year ago
 one year ago
3psilon Group Title
Two vectors A and B have magnitudes of 6m and make an angle of 60 degrees with each other. Find A DOT B.
 one year ago
 one year ago

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zonazoo Group TitleBest ResponseYou've already chosen the best response.0
\[\cos \theta=\frac{ x \dot y }{ \left x \right\left y \right}\]
 one year ago

zonazoo Group TitleBest ResponseYou've already chosen the best response.0
so then just plug in your info, and solve for x dot y, or a dot b in this case.
 one year ago

3psilon Group TitleBest ResponseYou've already chosen the best response.0
How did you get the Cos theta = that stuff?
 one year ago

zonazoo Group TitleBest ResponseYou've already chosen the best response.0
its just a theorem or an equation which comes from the law of cosines
 one year ago

3psilon Group TitleBest ResponseYou've already chosen the best response.0
So is it just 3?
 one year ago

zonazoo Group TitleBest ResponseYou've already chosen the best response.0
well i took it when i first read it that A and B each had a magnitude of 6, but if they are 6 together, then yes it would be 3.
 one year ago

3psilon Group TitleBest ResponseYou've already chosen the best response.0
Oh they each have 6 So it would be 18>?
 one year ago
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