victoriareed93222 victoriareed93222
  • 13-08-2020
  • Mathematics
contestada

Find the measure of b.
0
3
27

Find the measure of b 0 3 27 class=

Respuesta :

Leora03
Leora03 Leora03
  • 13-08-2020

Answer:

b= 126°

Step-by-step explanation:

OC= OB (radius of circle)

∠OCB= ∠OBC (base ∠s isos. △)

a= 27°

b= 180° -27° -27° (∠ sum of △OBC)

b= 126°

b= 2c (∠ at centre= 2 ∠ at circumference)

c= b/2 (divide by 2 on both sides)

c= 126° ÷2

c= 63°

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