Question

If a and b are two nonzero vectors such that ,a.b=a*b then find the angle between a and .

Answer 1

hi there!!
here is ur answer

we know,
a .b= |a|.|b| cos θ.
ATQ
|a|.|b|=|a|.|b| cosθ
therefore
cosθ=1
hence ,θ=90

hope helped