Answer:
Acute
Explanation:
Obtuse angles are angles that are larger than 90 but less than 180
Acute angles are angles that are less than 90 degrees
Right angles are angles that is exactly 90 degrees
Complementary angles are two angles whose sum is 90 degrees
Using this info, it seems the answer to this question is B. Acute because it says "the values returned by inverse to angles larger than 90" and since acute is the opposite of obtuse imma say B but im not too sure