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Tommy
Mathematics
13 July, 21:57
m∠A = 42 and m∠C = 57. Find m∠B.
A. 81
B. 99
C. 132
D. 147
+3
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1
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Gerald Fuller
13 July, 22:06
0
A.
because the total distance of every triangle 180. Add the two other angles so 42 + 57 = 99. Then you have to subtract those two combined angles to find the missing one from the total distance, which is 180. 180-99=81. the answer is A. 81
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