Trigonometric Tangent Function - Tan(deg)

Trigonometry Function Graphs for Sin, Cos, Tan, & Reciprocal Functions

Inverse Tangent Definition, Function & Formula - Lesson

Sin Cos Tan Graphs - GCSE Maths - Steps, Examples, Worksheet

Trigonometric Functions (Definition, Graphs, Solution, and Examples)

Tan Graph - GCSE Maths - Steps, Examples & Worksheet

MFG The Tangent Function

Trigonometry Function Graphs for Sin, Cos, Tan, & Reciprocal Functions

Graphing Tangent Functions, Period, Phase & Amplitude - Lesson

Trigonometric functions - Wikipedia

Tangent -- from Wolfram MathWorld