Use an identity to write the expression as a single trigonometric function or as a single number.
-$$1 - 2 \sin ^ { 2 } 2 x$$

Name: Use an identity to write the expression as a single trigonometric function or as a single number. -\[1 - 2 \sin ^ { 2 } 2 x\]
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Question

Quizplus · Accepted Answer

The expression can be simplified using the double angle identity for cosine, which is $\cos 2\theta = 1 - 2\sin^2\theta$. By substituting $\theta = 2x$, we get $\cos 4x$, which matches option B.

Use an Identity to Write the Expression as a Single 1−2sin⁡22x1 - 2 \sin ^ { 2 } 2 x1−2sin22x

Use an Identity to Write the Expression as a Single $1 - 2 \sin ^ { 2 } 2 x$