Decide Whether the Expression Is or Is Not an Identity $$\sqrt { \sec ^ { 2 } x - \tan ^ { 2 } x } = 0$$

question 320

Multiple Choice

Decide whether the expression is or is not an identity.
- $$\sqrt { \sec ^ { 2 } x - \tan ^ { 2 } x } = 0$$

• A) Identity
• B) Not an identity

---

Definitions:

Classification

The systematic arrangement of living organisms into hierarchical groups based on their characteristics and evolutionary history.

Taxonomy

The science of classifying organisms based on their characteristics, forming a structured hierarchy that includes groups like species and genus.

Classifying Organisms

The scientific task of organizing and categorizing biological organisms into a hierarchical system such as kingdom, phylum, class, order, family, genus, and species based on their similarities and differences.

Naming

The act or process of assigning a name to someone or something, which is fundamental in all forms of classification and identification.