A 60 degree angle
acute
18 degrees
It is 60 degrees
Complements are defined for angles, not trigonometric ratios of angles.
90 - 30 = 60 degrees.
complementary angles sum to 90o so 60o is your answer.
complement to an angle is 90 degrees minus the angle 90 - 37 = 53 degrees
The sum of two complements is 90 degrees, or a right angle. 90-35=55 degrees.
Acute angle
sin(37) = 0.6018150232
A 53 degree angle.