CorlHorl CorlHorl
  • 04-04-2020
  • Mathematics
contestada

I need some help pls

I need some help pls class=

Respuesta :

MathPhys
MathPhys MathPhys
  • 04-04-2020

Answer:

160°

Step-by-step explanation:

∠C and ∠D are both inscribed angles of arc AB.  Therefore, they are equal.

5w + 20 = 7w − 4

24 = 2w

w = 12

Therefore, ∠C = ∠D = 80°.

Inscribed angles are half the central angle, so mAB = 2 × 80° = 160°.

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