+Cosine measures the ratio of the [adjacent](/wiki/adjacent) side to the [hypotenuse](/wiki/hypotenuse) in a right triangle. It describes the horizontal position in circular motion, echoing the rhythm of waves and cycles.
+## See also
+- [Sine](/wiki/sine)
+- [Tangent](/wiki/tangent)
+- [Trigonometry](/wiki/trigonometry)
... 1 more lines