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Can someone please help me out?
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Can someone please help me out?

Can someone please help me out?-example-1
User Lou Grossi
by
3.2k points

1 Answer

5 votes

9514 1404 393

Answer:

62°

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°

User Admiral Land
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3.6k points
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