fatstarrlouise fatstarrlouise
  • 11-05-2018
  • Mathematics
contestada

If angle A is complementary to angle B, and angle B is supplementary to angle C, what is the measurement of angle C if angle A is 21 degree...

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MrGumby
MrGumby MrGumby
  • 17-05-2018
C = 111 degrees

Since A and B are complementary they add to 90. So we know that B must be 69 degrees. 

Since B and C are supplementary they add to 180. So we know that C must be 111. 
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