F1 of 2,1N positive y direction

F2 of 1,5N negative. x direction

|F|=sqrt (2.1^2 + 1.5^2) = sqrt(4.41+2.25) = 2.58 Newtons

tan angle above negative x axis = 2.1/1.5
so angle above neg x axis = 60.5 degrees above left