Question

The diagram shows three vectors.

Answer 1

Any vector which is made in x-y plane will have some angle with the x axis

in that case we can say that

$P_X = P cos\theta$

also for Y direction we can say

$P_y = P sin\theta$

so here the two components of vector is given by Px and Py

so we can say that

$\vec P = (Pcos\theta)\hat i + (Psin\theta)\hat j$

so correct answer would be

Vectors Px and Py are components of vector P.