Complete the Identity $1 - \cos ( 2 \theta ) + \cos ( 6 \theta ) - \cos ( 8 \theta ) =$

question 318

Multiple Choice

Complete the identity.
- $1 - \cos ( 2 \theta ) + \cos ( 6 \theta ) - \cos ( 8 \theta ) =$ ?

• A) \(4 \sin \theta \sin ( 3 \theta ) \sin ( 4 \theta )\)
• B) \(4 \sin \theta \cos ( 3 \theta ) \sin ( 4 \theta )\)
• C) \(4 \cos \theta \cos ( 3 \theta ) \sin ( 4 \theta )\)
• D) \(4 \cos \theta \cos ( 3 \theta ) \cos ( 4 \theta )\)

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Salinity

Salinity is the measure of the concentration of dissolved salts in water, affecting the water's density, freezing point, and biodiversity.

Freshwater Inland Wetlands

Ecosystems situated away from coastal areas, characterized by the presence of shallow water bodies like marshes and swamps, which support a diverse array of plant and animal life.

Human-Related Activities

Actions and behaviors performed by humans that have an impact on the natural environment, often contributing to environmental degradation.