Python math.sin() Method

Python math 模块Python math Module

Python math.sin(x)Returns the sine of x radians.

To get the sine of a specified angle, you must first convert it to radians using the math.radians() method.

Python Version: 1.4

Syntax

The syntax of the math.sin() method is as follows:

math.sin(x)

Parameter Description:

  • x-- Required. A number. If x is not a number, a TypeError is returned.

Return Value

Returns a floating-point number representing the sine of x, ranging from -1 to 1.

Example

The following example returns the sine of a number:

Example

# Import the math package
import math

# Output the sine value
print (math.sin(0.00))
print (math.sin(-1.23))
print (math.sin(10))
print (math.sin(math.pi))
print (math.sin(math.pi/2))

Output result:

0.0
-0.9424888019316975
-0.5440211108893699
1.2246467991473532e-16
1.0

To get the sine of a specified angle, you must first convert it to radians using the math.radians() method:

Example

# Import the math package
import math

# Convert angle 30 to radians first, then calculate the sine value
print(math.sin(math.radians(30)))

# Convert angle 90 to radians first, then calculate the sine value
print(math.sin(math.radians(90)))

Output result:

0.49999999999999994
1.0

Python math 模块Python math Module

Other Extensions