Trigonometry: Co-Function Identities - Expii

The co-function identities relate "co-pairs" of trig functions at x and π/2 - x. For example, sin(π/2 - x) = cos(x), cos(π/2 - x) = sin(x), tan(π/2 - x) = cot(x), and cot(π/2 - x) = tan(x).

Cofunction Identities

Cofunction, Definition, Identities & Examples - Lesson

Basic Trigonometric Identities: Pythagorean Identities and Cofunction Identities

Use cofunction identities and trig identities to find the indicated trig functions

Lesson 3 derivative of hyperbolic functions

Explore Trigonometric Identities: Cofunction, Negative Angle, and Pythagorean Identities

What are the Trigonometric Cofunction Identities?

Trigonometry: Double-Angle Identities - Expii

Trig Identities Memory Hexagon (Part 2): Product and Cofunction Identities

Use cofunction identities and trig identities to find the indicated trig functions

Trigonometry: Negative Angle Identities - Expii

Cofunction Identities ❖ Trigonometry

Explore Trigonometric Identities: Cofunction, Negative Angle, and Pythagorean Identities