Cook was waived by the Kings on Thursday, James Ham of ESPN 1320 Sacramento reports.
Cook agreed Monday with the Kings on a one-year contract, Marc J. Spears of ESPN.com reports.
Cook recorded 22 points (9-20 FG, 4-10 3Pt), six rebounds and five assists over 35 minutes during Saturday's 104-101 loss to the Stars.
Cook ended with 27 points (11-18 FG, 2-8 3Pt, 2-3 FT), nine rebounds, nine assists and two steals over 40 minutes during Thursday's 116-106 loss to Birmingham.
Cook produced 29 points (11-23 FG, 7-10 3Pt, 0-1 FT), five rebounds, four assists and one steal over 35 minutes during Tuesday's 123-115 loss to the Hustle.
Cook produced 24 points (9-17 FG, 3-6 3Pt, 3-3 FT), five rebounds, eight assists and two steals over 36 minutes during Wednesday's 121-118 win over the Blue.
Cook recorded 29 points (10-18 FG, 2-5 3Pt, 6-6 FT), five rebounds and five assists over 38 minutes during Saturday's 101-96 win over Austin.
Cook ended with 28 points (10-19 FG, 3-7 3Pt, 3-3 FT), five rebounds and six assists over 33 minutes during Thursday's 109-99 win over Santa Cruz.
Cook ended with 27 points (12-19 FG, 3-6 3Pt), four rebounds, three assists, two steals and one block over 32 minutes during Tuesday's 106-98 loss to the Hustle.