noun
- plural of cosine; trigonometric functions that give the ratio of the adjacent side to the hypotenuse in a right triangle
Usage: mathematics
Examples
- The students calculated the cosines of various angles in their trigonometry homework.
- Cosines are essential for solving problems involving right triangles.
- The graph shows how cosines vary as angles change from 0 to 360 degrees.
- Engineers use cosines to determine forces in structural analysis.
- The cosines of 0°, 30°, 45°, 60°, and 90° are commonly memorized values.
- Cosines and sines are fundamental trigonometric functions in mathematics.