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bekas [8.4K]
3 years ago
7

Find Arc PRPlease help and give explanation ​

Mathematics
1 answer:
garri49 [273]3 years ago
8 0
Arc PR is 156 degrees. Since both angles are are making the forming arc they should be congruent. You can put (5x+23)=(9x-21) which is x=11.
Then you plug in 11 into your equation; 5(11)+23=78.
Since the vertex is on the outside of the circle then the arc is forms is 2 times the value of the angle.
78(2)=156
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