∠A and ∠B are complementary angles .
∠A = 71°
Sum of two angles that are complementary to each other will always be equal to 90° .
Which means :-
Therefore , the measure of ∠B = 19° .
Answer: mZB is 19
Explanation:
complementary is equal to 90 degrees.
so 90-71 is 19.
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