Decide Whether the Expression Is or Is Not an Identity $$\sqrt { \sin ^ { 2 } x + \cos ^ { 2 } x } = 1$$

question 294

Multiple Choice

Decide whether the expression is or is not an identity.
- $$\sqrt { \sin ^ { 2 } x + \cos ^ { 2 } x } = 1$$

• A) Not an identity
• B) Identity

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Definitions:

Conscious Awareness

The state of being fully alert and aware of one's environment, thoughts, and feelings, allowing for intentional thought and action.

Differential Threshold

The minimum difference in stimulation required to detect a change or difference between two stimuli.

Absolute Threshold

The smallest level of stimulus that can be detected by the sensory systems at least half the time.

Absolute Threshold

The minimum intensity of a stimulus required to be perceptibly recognized by an individual's senses.