Write the Word or Phrase That Best Completes Each Statement $$\tan ^ { 2 } x = \sec ^ { 2 } x - \sin ^ { 2 } x - \cos ^ { 2 } x$$

question 165

Essay

Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
- $$\tan ^ { 2 } x = \sec ^ { 2 } x - \sin ^ { 2 } x - \cos ^ { 2 } x$$

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Definitions:

Informal Writing

A style of writing that is relaxed and not bound by strict grammatical rules, often used in personal communication.

Polished Conversation

An exchange of words that is smooth, refined, and free from rudeness or unnecessary complexity.

Courtesy Copy

An email or document sent to individuals not primarily addressed but who may need or want to be informed of the content, abbreviated as "cc."

Emails

Electronic messages sent or received over a computer network, used for personal or business communication.