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Need help with please show me how to get the answer

Need help with please show me how to get the answer-example-1
User Joberror
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1 Answer

1 vote

Answer:

? = 47°

Explanation:

The angle marked B at the intersection of the secants is half the difference of the arcs they intercept.

∠B = (DE -AC)/2 = (142° -48°)/2 = 47°

The unknown angle is 47°.

User Mary
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