Maths/Physics help!!!?

from a point on the +tive axis if You move downwards in a circular clock like arc towards the resultant vector, one is measuring the angle clockwise (in the direction the clock hands rotate).

if one has to move upward it is counter-clockwise. usually counter-clockwise direction is the +tive angle.

therefore if Your vector is in the ist quadrant (+tive x and +tive y), the anti-clockwise angle is +50° , the clockwise angle is (- 310° or just 310° clockwise).

hope this helps

50

CW for the +x-axis could either be called: -50° or 310° <= ANS

It should be understood that the STANDARD way of defining angles of 2-D vectors is the angle measured CCW from the tail of the vector wrst the +x-axis.

The vector starts at the origin (0,0)