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:

Generate Hypotheses

The process of formulating testable assumptions or propositions about a phenomenon or relationship between variables.

Empirical Methods

These are techniques that rely on observation, experimentation, and evidence rather than theory alone for knowledge acquisition.

Manipulated Independent Variable

An independent variable for which participants have been randomly assigned to an experimental group.

Randomly Assigns

In experimental design, the process by which study participants are allocated to different groups in a manner that ensures each participant has an equal chance of being placed in any group.