Please help!! Don’t understand this at all

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Chen5968

12.07.2020

Mathematics

we know that

major arc is defined as the bigger arc connecting two points on the edge of a circle. measure of major arc is always more than $180$ ° or π radian

in this problem

the mayor arc is bac

$mayor\ arc+minor\ arc=360\\ minor\ arc=360-mayor\ arc\\minor\ arc=360-240\\minor\ arc=120\ degrees$

find the ratio of the measure of the major arc to the measure of the minor arc

$ratio=\frac{240}{120} =\frac{2}{1}$

therefore

the answer is the option

$2: 1$

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