declansmith949 declansmith949
  • 22-09-2020
  • Mathematics
contestada

angle a and angle b are supplementary to c if the measure of angle a is 12 less than 2 times the measure of angle c what is the measure of angle b

Respuesta :

arshuhamid3127 arshuhamid3127
  • 23-09-2020

Answer:

Supplementary angle sum is 90°

a+b=c

c=90°

Step-by-step:

according to question (A.T.Q.)

  • a-12=2c
  • 2c=a-12
  • c=a-12/2
  • since,
  • c=90°
  • 90=a-12/2
  • 90x2=a-12
  • 180+12=a
  • a=192
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