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Find angle A if arc MDE is equal to 50 degrees and arc MBC is equal to 10 degrees

Find angle A if arc MDE is equal to 50 degrees and arc MBC is equal to 10 degrees-example-1

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m∠A = (1/2)(mDE - mBC)

m∠A=(1/2)(50-10) = (1/2)*40=20

m∠A = 20

User Matt Butlar
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