Cofunction Sine and cosine are each other's cofunctions. In mathematics, a function f is cofunction of a function g if f (A) = g (B) whenever A and B are complementary angles (pairs …

The cofunction identities give a relationship between trigonometric functions sine and cosine, tangent and cotangent, and secant and cosecant. These functions are referred to as …

Before we tackle what a cofunction is, you should be comfortable with definition of a function and what complementary angles are.

Oct 22, 2025 · A trigonometric cofunction is defined as expressing a trigonometric angle ratio in terms of the other. It illustrates how sine, cosine, tangent, cotangent, secant, and cosecant …

What are Co-Functions in Trigonometry, Finding the cofunction, Using the cofunction relationship, examples and step by step solutions

In this lesson, we will learn: What cofunction identities are, and where they come from. How we can write and relate one function in terms of its cofunction. How to determine the cofunctions …

The cofunction calculator is here to find the cofunction of the trigonometric function you choose for a given angle between 0 and 90 degrees.

The meaning of COFUNCTION is a trigonometric function whose value for the complement of an angle is equal to the value of a given trigonometric function of the angle itself.

Jan 1, 2026 · In a right triangle, you can apply what are called " cofunction identities". These are called cofunction identities because the functions have common values. These identities are …

May 17, 2025 · Explore cofunction relationships among sine, cosine, tangent and more. Learn to derive and apply these key trigonometric identities.