Resolve the 15 meters into components.
15 sin(25) = 6.339 m right
15 cos(25) = 13.595 m down field
add the 35 + 13.595 down field for 48.595 m downfield.
Use Pythagorean theorem on these two legs of a right triangle to find the magnitude of the displacement.
SQR(6.339^2 + 48.595^2) = 49.007 m
The angle to the right of downfield is arcsine(6.339/49.007) or 7.43 degrees rotating right from the original direction.