Glossary Term
Math.cos()
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The Math.cos() static method returns the cosine of a number in radians.
Because cos() is a static method of Math, you always use it as Math.cos(), rather than as a method of a Math object you created (Math is not a constructor).
Return value: The cosine of x, between -1 and 1, inclusive. If x is Infinity, -Infinity, or NaN, returns NaN.
Parameters: x A number representing an angle in radians.
Syntax example: Math.cos(x)
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