.If the angle between the vectors a and "b" is `(pi)/(3)` , then what is the angle between `-5a` and `6b` ? "

If the angle between the vectors vec(a) and vec(b) is (pi)/(3) . Then what is the angle between -5 vec(a) and 6 vec(b) ?

If the angle between the vectors vec(a) and vec(b) is (pi)/(3) , what is the angle between -5vec(a) and 6 vec(b) ?

If the angle between the vectors bari+bark and bari-barj+abark " is " pi/3 , then a =

If angle between vec(a) and vec(b) is (pi)/(3) , then angle between 2bar(a) and -3vec(b) is

If the angle between the vectors a and b be theta and a*b=costheta then the true statement is

If the angle between the vectors a and b be theta and a*b=costheta then the true statement is

If the angle between the vectors a and b be theta and a*b=costheta then the true statement is

A : Angle between the vectors I - 2j + k, 2i - j - k is (pi)/(3) . R : If theta is the angle between a,b then cos theta = (a.b)/(|a||b|)