What is Domain?

What is the domain of cosine inverse function?

What is the domain of tan inverse function?

What is the change in domain structure, when ferromagnetic substance is placed in weak external magnetic field?

What is cladogram ? Given diagrammatic representation of three domains of life with the help of cladogram.

Explain ferromagnetism on the basis of domain theory.

Explain qualitatively on the basis of domain picture the irreversiblity in the magnetisation curve of a ferromagnet