Answer:
x = 6
Step-by-step explanation:
cos 60° = JK/JL
cos 60° = 7 / (3x-4)
(1/2) = 7 / (3x-4)
(3x-4) = (2)(7)
3x-4 = 14
3x = 14+4
3x = 18
x = 18/3
