Question

The vector P makes 120° with x_axis and vector Q makes 30°with Y_axis .what is their resultant ??

Answer 1

The y-axis makes a `90^@` with the x-axis, therefore, the angle that `vecQ` makes with respect to the x-axis is:

`30^@+90^@=120^@`

This means that `vecP` and `vecQ` are in the same direction, therefore, the resultant vector, `vecR` is the same direction.

The magnitude of `vecR` is:

`|vecR|= |vecP|+|vecQ|`

and its direction is `120^@` with respect to the x-axis.