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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.
 2 years ago
 2 years 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.
 2 years ago
 2 years ago

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

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

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

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