Convert the Expression $1 + \cos 4 y$ A) $2 \cos ^ { 2 } 2 y$

question 248

Multiple Choice

Convert the expression.
$1 + \cos 4 y$

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Definitions:

Precognition

The purported psychic ability to see or know about events before they happen, which lacks empirical support in the scientific community.

Clairvoyance

A form of extrasensory perception where individuals claim to gain information about an object, person, location, or physical event through means other than the known human senses.

Telepathy

The purported exchange of thoughts or ideas without using the recognized senses.

Priming

A process in psychology where exposure to a stimulus influences a response to a subsequent stimulus, without conscious guidance or intention.