The resultant of two vectors vec(A) and vec(B) is perpendicular to vec(A) and equal to half of the magnitude of vec(B). Find the angle between vec(A) and vec(B) ?

The resultant of two vectors vec(A) and vec(B) is perpendicular to vec

1.	The resultant of two vectors vec(A) and vec(B) is perpendicular to vec(A) and equal to half of the magnitude of vec(B). Find the angle between vec(A) and vec(B) ?
Answer» SOLUTION :Since `VEC(R)` is perpendicular to `vec(A)`. figure SHOWS the three vectors `vec(A), vec(B)` and `vec(R)` angle between `vec(A)` and `vec(B)` is p-q `sin q = (R)/(B) = (B)/(2B) = (1)/(2)` `rArr q = 30^(@) rArr` angle between A and B is `150^(@)`.