christian2610 christian2610
  • 22-01-2018
  • Mathematics
contestada

please help me!! i don't understand

please help me i dont understand class=

Respuesta :

gustanika
gustanika gustanika
  • 22-01-2018
∠A is called inscribed angle. Inscribed angle is made from a point that attaches to the circle's circumference.

∠BOC is central angle. ∠BOC and ∠A are facing to the same side and because they are facing to the same side, they apply the rule of
inscribed angle = 1/2 × central angle

So we can find ∠A with this property
∠A = 1/2 × 132°
∠A = 66°
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