- Choice H
The Pythagorean trigonometric identity is expressed as:

sin² x + cos² x = 1

Therefore, y = sin² x + cos² x = 1

## Skills you are tested for:

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- Choice H
The Pythagorean trigonometric identity is expressed as:

sin² x + cos² x = 1

Therefore, y = sin² x + cos² x = 1

## Skills you are tested for:

Was this explanation helpful?

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