a vector and b vector are two vector and Preeta is the angle between them if a vector into vector commode equal to root 3 value of theta is
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a+b =-c
=>| a+b | ^2 = |-c| ^2
=>| a|^2 + |b|^2 + 2*a.b = |c|^2
=> 2*|a||b|cos(theta) = 49–9–25
=>Cos (theta) = 15/(2*3*5)
Cos (theta) =1/2
Or theta = 60°
=>| a+b | ^2 = |-c| ^2
=>| a|^2 + |b|^2 + 2*a.b = |c|^2
=> 2*|a||b|cos(theta) = 49–9–25
=>Cos (theta) = 15/(2*3*5)
Cos (theta) =1/2
Or theta = 60°
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