acute
18 degrees
90 - 30 = 60 degrees.
thirty nine
complementary angles sum to 90o so 60o is your answer.
a 60-degree angle
A 60 degree angle
It is 60 degrees
A 53 degree angle.
The sum of two complements is 90 degrees, or a right angle. 90-35=55 degrees.
18 degrees
Complements are defined for angles, not trigonometric ratios of angles.
90 - 30 = 60 degrees.
thirty nine
complementary angles sum to 90o so 60o is your answer.
An acute angle.
A pair of complementary angles are two angles which add up to equal 90 degrees. In this instance, the complementary angle to 65 degrees is equal to 90 - 65 = 25 degrees.
You know, if you look in your math book, it'll tell you how to find out. Alternatively, you could just pay attention in class.