Question
Thu June 07, 2012 By:

two vectors having equal magnitude make an angle (D) with each other .find the magnitude and direction of the resultant?

Expert Reply
Fri June 08, 2012
put in the formula and find:let the two vwectors be:P&P
R2=P2+P2+2P2cosD=2P2(1+cosD)=4P2 cos2D/2
R=2PcosD/2
similarly by putting in the formula for angle we get angle=D/2
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