Answer: Two measurements are 29° and 61° .
Explanation:
Since we have given that
∠A and ∠B are complementary angles.
So, sum of ∠A and ∠B is 90°
so, our equation becomes,

And according to question, it becomes,

By putting the value of Eq(2) in Eq(1), we get that

So, ∠A = 29°
and ∠B = 90° - 29° = 61°
Hence, two measurements are 29° and 61° .