Question

two vector p and q of magnitude 5 and 3 are inclined at an angle of 30 degree to each other calculate the resultant in direction of q and perpendicular to the direction of q

Answer 1

in q direction
3 cos 0 + 5 cos 30

perpendicular to q
3 cos 90 + 5 sin 30

Note: cos 0 = 1 and cos 90 = 0