Afrog hops 5m east and 2m north. what is the magnitude of the frogs total displacement in m?

As per the question a frog jumps 5 m towards east.

Frog again jumps 2 m north.

Let the displacement along east is denoted by vector A and the displacement towards north is denoted as vector B.

Hence magnitude of A = 5 m

           Magnitude of B = 2 m

We are asked to calculate the total displacement.

Here the angle between them is 90 degree as A is towards east and B is towards north.

As per parallelogram law of vector addition,the magnitude of total displacement [R] will be-

                              [cos90= 0]

                               [ans]

okay i have so many questions. but the big one here is: um wt..f is this mess? ?