15 - 90 = -75
15 less than 90 = +75
Chat with our AI personalities
The complement of any angle, given that the angle is less than 90 degrees, is 90 minus the angle measure. In other words, it is, "What degree measure, when added to the original angle, creates 90 degrees?"
22150.5
An angle greater than 0 but less than 90 degrees is acute An angle greater than 90 but less than 180 degrees is obtuse
anything less than 90 degrees
An acute angle measures less than 90 degrees.