noun. ratio of the adjacent to the opposite side of a right-angled triangle.
- circular function
- trigonometric function
Example sentences of the word cotangent
1. Noun, singular or mass
When inputting cotangent into a graphing calculator, you need to know the angle in degrees for which you are trying to find the cotangent.
Mathematicians give these reciprocals the names cosecant, secant and cotangent respectively.