David estimates that he will have expenses totaling $24,870 for one year of college, he will receive$7,560 in grants. howmuch will david have to contribute each semester during this year? $4,875$8,655$9,750$17,310

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°