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
Tan(x) is one of the trigonometric functions and it represents the ratio of sin(x) to cos(x). It tells us how steeply inclined an angle is in relation to its adjacent side in a right triangle.