📐 Tangent Calculator (tan x)
Compute tan(x) and highlight undefined positions automatically. Degree/radian support included.
Tangent Calculator
The tangent function is the ratio of sine to cosine: tan(x) = sin(x)/cos(x). It represents the ratio of the opposite side to the adjacent side in a right triangle. Tangent is undefined when cos(x) = 0, which occurs at 90°, 270°, and their coterminal angles.
Quick Examples
Common tangent values you might encounter.
Use Cases
Common applications of the tangent function.
Triangle Solving
- Finding side ratios in right triangles
- Calculating slopes and angles
- Solving geometry problems
Engineering
- Calculating slopes and gradients
- Structural analysis
- Surveying and navigation
Frequently Asked Questions
Common questions about the tangent function.
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Last updated: 2025-10-21 — Compiled and reviewed by Calvin (Math Research, FreeCalculators.app)