Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The sine function (sin) is another mathematical function that relates an angle within a right triangle to the ratio between the length of opposite side and hypotenuse. It is commonly used in physics for analyzing periodic motion.