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Answer :

Abidemiokingo

Answer:

40degrees

Step-by-step explanation:

Find the diagram attached

Since the triangle ina semi circle is a right angle, hence <B = 90degrees

Also frm the diagram

<A + <B + <C = 180

<A + 90 + 50 = 180

<A + 140 = 180

<A  = 180 - 140

<A = 40degrees

Hence the measure if m<BAC is 40degrees

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