Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis.


Given: A unit vector in XY- plane.


Let is a unit vector in the given XY- plane then the value of


Will be :


θ is the angle given, which is made by unit vector with positive direction of x-axis.


for θ = 30°




Hence, the required unit vector is .


1
1