Answer:
C.) 5.1
Step-by-step explanation:
First, solve for J's angle of degrees
180 - (120 + 40) = 20
Second, fill in all the information that you know in the equation
sin(20) / 2 and sin(120) / k
Third, cross multiply
k x sin(20) = 2 x sin(120)
Fourth, solve for k
k x sin(20) / sin(20) = [2 x sin(120)] / sin(20)
k = [2 x sin(120)] / sin(20)
k = 5.0641777.....
Fifth, round to the nearest tenth
k = 5.1
