Question

A vector of length l is turned through the angle o
about its tail. What is the change in the position
vector of its head ?​

Answer 1

Answer:

When the vector length rotates by angle about its tail, the head traces an arc. If you join the end points of the arc, you will observe an isosceles triangle of equal sides and angle between them . ... This is the magnitude of the displacement of the head of given vector of length , moving about its tail through angle .