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Sagot :
Answer:
m<A = 51, m<B = 39
Step-by-step explanation:
x+x+12=90
2x+12=90
2x=78
x=39
m<A = 51, m<B = 39
Answer:
39° = m∠A
51° = m∠B
Step-by-step explanation:
Complementary angles have a sum of their measures = 90
Let x = m∠B
then x + 12 = ∠A
m∠A + m∠B = 90
x + 12 + x = 90
2x + 12 = 90
2x = 78
x = 39° = m∠A
x + 12 = 39 + 12 = 51° = m∠B
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