sisi557 sisi557
  • 25-03-2021
  • Mathematics
contestada

Can someone help me solve this please?

Can someone help me solve this please class=

Respuesta :

masbrosur
masbrosur masbrosur
  • 25-03-2021

Answer:

61.5°

Step-by-step explanation:

let's say the midle point as 0

mCOD = 180° - 140° = 40°

mEOF = mCOF - (mCOD + m DOE) = 180 - 40 - 83 = 57°

∆EFO is Isosceles Triangle with EO = FO then

mEFC = (180 - mEOF) : 2 = (180 - 57) : 2 = 61.5°

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