Find the value of x.
5x - 2 + 2x + 8 = 90
7x = 84
x = 12
JB = KB since these are radii .....so
5x - 2 = 2x + 8
5x - 2x = 8 + 2
3x = 10
x = 10 / 3
Ah...I see now that they refer to the angles rather than the radii !!!
THX, civomanzuk for the correction !!!