catilyn2005
catilyn2005 catilyn2005
  • 09-09-2020
  • Mathematics
contestada

I need help I don't understand this​

I need help I dont understand this class=

Respuesta :

BrainlyWarrior
BrainlyWarrior BrainlyWarrior
  • 09-09-2020

Answer :

It is clear from the diagram that,

  • ㄥ6 + ㄥ8 = 180

⇒ (2x - 5) + (x + 5) = 180

⇒ (2x + x) + (5 - 5) = 180

⇒ 3x + 0 = 180

⇒ x = 180/3

⇒ x = 60°

◈ From the geometry of figure,

  • ㄥ3 = ㄥ6

⇒ ㄥ6 = (2x - 5)

⇒ ㄥ6 = (2×60 - 5)

⇒ ㄥ6 = 120 - 5

⇒ ㄥ6 = 115°

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