Double-Angle Identity for Cosine
$$\cos2x=\cos^2x-\sin^2x$$
Usage
- Used to transform powers and products of trigonometric functions.
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CAT Formulas
Indefinite Integration
Double-Angle Identity for Cosine
Double-Angle Identity for Cosine
$$\cos2x=\cos^2x-\sin^2x$$
Usage
- Used to transform powers and products of trigonometric functions.
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