Identify all that is given.
After 1 hour where would the the plane be if there were no problem with the wind?
(Call the starting or origin Point A and call the point where the airplane would be after 1 hour as Point B.)
You need to determine that.
Hint: at a speed of 200km/h with a heading of 60degrees northeast,
determine the km distance NORTH of the starting point
& the km distance EAST of the starting point.
[ N = 200 cos(60); E = 200 sin(60) ]
(The wind (at 50 km/h) will effectively move the airplane 50 km WEST in 1 hour. This is what you need to counteract or correct.)
THEN, from that location where the plane would be after 1 hour (which was point B), move it directly EAST 50 km (call this point C).
From the starting point (A), the airplane needs to head towards point C, to correct for the wind.
The adjusted bearing is:
(You've already computed the values for N & E above.)