Python 3 – Number sin() Method
The sin()
function is a built-in mathematical function in Python 3 that returns the sine of a given angle in radians. The sine function is one of the six trigonometric functions that are used to identify the values for different angles in a right-angled triangle. The sine function is used to identify the ratio of the length of the side opposite to an angle in a right-angled triangle to the length of the hypotenuse. Python 3 provides the built-in sin()
method that is widely used in mathematical calculations in various applications.
Syntax
The sin()
function takes one parameter, which is the angle in radians, and it returns the sine of that angle in radians. The syntax for the sin()
function is:
import math
math.sin(x)
Parameters
The sin()
function takes only one parameter, which is the angle in radians. The angle must be in radians, not in degrees. If the angle is in degrees, it should be converted to radians before passing it to the sin()
function.
Return Value
The sin()
function returns the sine of the given angle in radians. The value returned by the function is a float value.
Examples
import math
angle = math.pi / 4 # 45 degrees in radians
sin_value = math.sin(angle)
print(sin_value)
Output
0.7071067811865475
In the above example, we have imported the math
module to use the sin()
method. We have defined an angle of 45 degrees in radians and then passed it to the sin()
method. The sin()
method returns the sine of the angle, which is 0.7071067811865475.
Let’s look at another example:
import math
angle = math.pi # 180 degrees in radians
sin_value = math.sin(angle)
print(sin_value)
Output
1.2246467991473532e-16
In the above example, we have defined an angle of 180 degrees in radians and then passed it to the sin()
method. The sin()
method returns the sine of the angle, which is a very small value, approximately equal to zero.
Conclusion
In conclusion, the sin()
function is a built-in mathematical function in Python 3 that returns the sine of a given angle in radians. The sin()
method takes one parameter, which is the angle in radians, and it returns the sine of that angle in radians. The sin()
function is widely used in mathematical calculations in various applications.