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Given angle APS = 77 degrees and arc AP = 128 degrees, find the degree measure of arc PS.

 

 Oct 30, 2020
 #1
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ARC AS = 2 * 77

 

then PS =   360 - (2*77) - 128 = ..............o

 Oct 31, 2020
 #2
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Let the center of a circle be O

 

∠AOP = 128º

 

∠APO = 1/2 (180 - 128) = 26º

 

∠SPO = 77 - 26 = 51º

 

arc PS = 180 - 2 * 51 = 78º 

 Oct 31, 2020

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