A boy walks 1260meters on a bearing of 120°.how far South is he from the starting point?show all workings including drawing

Answer 1

In my sketch I have a triangle in the 4th quadrant with a hypotenuse of 1260 and
a base angle of 30° trying to find the y value
sin30° = y/1260

y = 1260sin39° metres.

Be careful how you word your answer, remember that your value is negative
in quadrant 4. However, if you use the word "south" you don't show the negative sign.

Answer 2

All angles are measured CW from +Y-axis.
1260m[120o] = distance traveled.
Y = 1260*Cos120 = -630 = 630 m., South.

for CW rotation(bearing), we are in Q2.