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Write the given expression as the cosine of an angle.
Melanocytes
Cells located in the skin that produce melanin, the pigment responsible for skin color and protection against UV radiation.
Melanin
A pigment produced by melanocytes in the skin, responsible for hair, skin, and eye color, and provides protection against UV radiation.
UV Radiation
A form of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, capable of causing skin damage and other health effects.
Tactile
Relating to the sense of touch or the perception of pressure, texture, and vibration by the skin and other organs.
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