Help I need help with circles
minor arc FB = 360 - 160 - 140 = 60
So angle FAC = 30
Angle FCA = (1/2) ( minor arc GH - minor arc FB) = (1/2) (160 -60) = 50
FC / sin FAC = AF / sin FCA
10 / sin 30° = AF /sin 50°
AF = 10sin 50° / sin 30° = 10 sin 50° / (1/2) = 20sin 50° ≈ 15.3