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anonymous
 5 years ago
If vector a=8(vector b) and vector c=7(vector b) and what is angle between a and c ??
anonymous
 5 years ago
If vector a=8(vector b) and vector c=7(vector b) and what is angle between a and c ??

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0<8xb, 8yb> < 7xb, 7yb>  xb + yb = 1<b>

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah.. i didnt really understand that..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what do u mean in ur 3rd reply..??

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0a*c = 8<xb,yb> * 7<xb,yb>

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.056x^2b + 56 y^b is the only values we can get from it right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.056b^2 is the top value

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the bottom is 8b * 7b = 56b^2 cos(t) = 1

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0t = 90 begrees right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0so hard to type in the dark lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0or it might just be 180 degrees; since a and c are scalars of b and they are facing inopposite directions.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I worked it similarly. I don't know if we got same place. \[8b.7b =\left a \right\left c \right\cos \theta\] \[8b.7b =8b7b \cos \theta\] \[1=\cos \theta\] \[\cos^{1} 1=\theta\] \[\theta = 3.14 (radians)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I didn't dot the left hand side. May be that is a mistake that needs to be cleaned up. I should go to sleep now.
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