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IceJOKER [234]
3 years ago
5

Find the measure of the arc. A 146° E B MABC = [ ? 1°

Mathematics
2 answers:
sergey [27]3 years ago
6 0

Answer:

i get    mABC = 270°

Step-by-step explanation:

This is fairly straight forward once you the right angle symbol for the arc AC.  Also realizing the 148° for mAB is not needed for this question.  The 148° for mAB would be useful if you wanted to calculate arc mBC.

Remember there are 360° in a circle.  

The arc mAC is 90°

The arc mABC is the rest of the circle.       is the arc from  A to B to C

arc ABC + arc AC is the full circle 360°

     mABC + mAC  = 360°           mAC = 90°

     mABC + 90°  = 360°              - 90° from both sides

     mABC = 360° - 90°

      mABC = 270°

Evgesh-ka [11]3 years ago
4 0

Answer:

Step-by-step explanation:

the answer is mABC= 270:)

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