If zm and Zn are complementary angles, and m measures
42°
then the measure of Zn must be:

∠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°

answer: this is not a question

step-by-step explanation: this is a answer

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: