Question
Tue August 28, 2012 By: Muskan
u said if 2 vectors are added according to vector law of addition then R = A+ B then u gave an example about there addition i e 

A = 20 units

u had given an example of addition of vectors in the second video of this topic i have a question regarding the example

Expert Reply
Tue August 28, 2012
in the case of vectors the addition is also dependent upon the angle between the two quantities being added.
The formula for addition of two quantities is
R2=A2+B2+2cos a
here a is the angle between the two vectors A and B
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