ggladimariela
ggladimariela ggladimariela
  • 22-01-2021
  • Mathematics
contestada

Can someone please help me out?

Can someone please help me out class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 22-01-2021

9514 1404 393

Answer:

  62°

Step-by-step explanation:

The measure of the external angle where the secants meet is half the difference of the arcs they subtend.

  ∠A = (DE - BC)/2

  2×∠A = DE -BC

  DE = BC + 2×∠A

  DE = 38° +2(12°)

  arc DE = 62°

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