Please capitalize where necessary: this means that the horizontal component of f is the same as the horizontal component of -(l/r)Ω; i.e., fj = -(l/r)Ωcos(φ), where φ is the latitude.
This means that the horizontal component of F is the same as the horizontal component of -(L/r)Ω; i.e., Fj = -(L/r)Ωcos(φ), where φ is the latitude.