Question

if a unit vector j^ is rotated through an angle of 45 degrees anticlockwise then what is new vector​

Answer 1

Answer:

1) We have a unit vector "i" cap which  is rotated by an angle of 30 degree clockwise.

Then,required figure is shown.

2) X- component of new vector:

3)  Y- component of new vector:

Since, y component is in downward  direction ,so we add negative sign to it.

Hence, required vector is

Explanation: