472,326 views
21 votes
21 votes
Find the measure of the missing angle. *Don't worry about the degree symbol

Find the measure of the missing angle. *Don't worry about the degree symbol-example-1
User Marvin Thobejane
by
2.7k points

1 Answer

9 votes
9 votes

this is an ange formed by two intersecting chords

then the missing angle is given by


\theta=(1)/(2)(arcCB+arcSD)
\theta=(1)/(2)(191+55)
\theta=(1)/(2)(246)
\theta=123\degree

the missing angle is 123°

User Marco Boschi
by
2.9k points