Question

what are the maximum and minimum values of A vector and B vector​

Answer 1

R is maximum when Cos ( A, B) = +1 ie angle between vectors A and B is zero ie vectors A and B are parallel to each other. The resultant of two vector is minimum when both vectors are equal and in opposite direction i.e. the angle between the vector is 180 degrees.

Answer 2

Explanation:

lol cos t which which minimum and maximum values according as cos t has minimum and maximum values . I.. e. 1 or (-1) .hence a+b has maximum modulus. lal-lbl ,when the vectors point in the same direction and minimumo

modulus l lal-lbl when they point is opposite direction .