Finding acceleration of a crate pulled at 25° with kinetic friction

[unoriginal]

Homework Statement

A 880 N crate is being pulled across a level floor by a force F of 395 N at an angle of 25° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate.

Homework Equations

not quite sure?? was absent

The Attempt at a Solution

dont know where to begin

 

[unoriginal]

wow nevermind solved it...

found Fn first using the N of the crate and sin of the applied force, then i plugged that into

ma=uFn and found m by dividing 880 by 9.8 then just solved for a