Here's how to solve this. You have three forces acting on the point. Start by resolving each of the three into horizontal and vertical components. The horizontal component of a force

is

, and the vertical component is

. Then you can add together the three horizontal components to get the total horizontal force

and the three vertical components to get the total vertical force

. Finally, combine the total horizontal and total vertical components into a single vector. The magnitude of the final total force vector is:

and the angle of F is

Post back with the answer you get.