What is the measure of angle aoc? 42° 58° 66° 79°

answer: third option is correct.

step-by-step explanation:

since we have given that

measure of arc de = 50°

∠dbe = 58°

let the measure of arc ac be 'x'.

as we know that the measure of angle is half of the sum of intercepted arc .

so, it becomes,

and we know the measure of the arc is always equal to its central angle.

i.e. measure of arc ac = ∠aoc=66°

hence, third option is correct.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.