Solve Resultant Forces Homework Problem 1.23 | Attached Figure & Variables

[MrMechanic]

Homework Statement

See Attachments for Figure and Given Variables

Homework Equations

R^2 = Fx^2 + Fy^2
@=tan^-1 (Fy/Fx)

The Attempt at a Solution

I've already solved problem 1.22
I just need help at Problem 1.23
in problem 1.23
given the resultant as 4m/s, to the right
I tried solving it
4^2 = Fx^2 + Fy^2
But i can't seem to proceed from here.
I need help

 

[Chestermiller]

Try resolving the two vectors into components in the x and y directions. The sum of the x components has to equal 4, and the sum of the y components has to equal zero.

 

[MrMechanic]

sum of x = V1cos60 + v2cos30 = 4?
and
sum of y = v1sin60+v2sin30 = 0?
Corrent me if I am wrong.

 

[Chestermiller]

sum of x = V1cos60 + v2cos30 = 4?
and
sum of y = v1sin60+v2sin30 = 0?
Corrent me if I am wrong.

The 2nd eqn. should have a minus sign. See the figure.

Otherwise, great job.

Chet