Introduction to the use of the Cos () method for calculating trigonometric functions in Python

Source: Internet
Author: User
Tags cos numeric value

This article mainly introduces the use of the Cos () method in Python to compute trigonometric functions, which is the basic knowledge of the introduction of Python, the need of friends can refer to the

The Cos () method returns the cosine of x radians.


The following is the syntax for the Cos () method:

COS (x)

Note: This function is not directly accessible, so we need to import the math module, and then we need to call this function with the static object of math.


X--This must be a numeric value

return value

This method returns the value from 1 to 1, which represents the cosine of the angle


The following example shows the use of the Cos () method










Import Math

print ' cos (3): ", Math.Cos (3)

print ' cos ( -3): ", Math.Cos (-3)

print ' cos (0): ", Math.Cos (0)

print "cos (MATH.PI):", Math.Cos (Math.PI)

print "cos (2*MATH.PI):", Math.Cos (2*MATH.PI)

When we run the above program, it produces the following results:






5cos (3):-0.9899924966

Cos (-3):-0.9899924966

Cos (0): 1.0

cos (MATH.PI):-1.0

cos (2*MATH.PI): 1.0

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