Three Forces Are Exerted on an Object and as a Result

Short Answer

Three forces are exerted on an object and as a result the object moves with a constant velocity.One force is 60 N along the +x-axis,the second is 75 N along a direction making a counterclockwise angle of 150° with the +x-axis.
(a)What is the magnitude of the third force?
(b)What is the direction of the third force,measured clockwise from the +x-axis?