Answer :
Given :-
∠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 :-
[tex]\longmapsto71° +∠ B = 90°[/tex]
[tex]\longmapsto \: ∠B = 90 - 71[/tex]
[tex]\color{olive}\longmapsto \: \color{hotpink}∠B = 19°[/tex]
Therefore , the measure of ∠B = 19° .
Answer: mZB is 19
Step-by-step explanation:
complementary is equal to 90 degrees.
so 90-71 is 19.