Graph of Inverse Functions

The video tutorial covers the inverse trigonometric functions: sine, cosine, cosecant, secant, tangent, and cotangent. It explains their domains, ranges, and how to find their inverses by restricting domains. The concept of principal value branches is introduced, highlighting the unique intervals where these functions are one-to-one and onto. Graphical representations and examples are provided to illustrate these concepts.

What is the domain of the cosine function?

Why is the cosine function also not one-to-one?

What is the principal value branch of the cosine inverse function?

Explain the significance of the principal value in inverse trigonometric functions.