In Swift, the sin() function returns the sine of a number.
The illustration below shows the mathematical representation of the sin() function:
Note: We need to import
Foundationin our code to use thesin()function. We can import it like this:import Foundation.
sin(number)
//number can be real, float, or double.
This function requires a number that represents an angle as the parameter.
In order to convert degrees to radians, use the following formula:
radians = degrees * ( pi / 180 )
This function returns the sine of the number that is sent as a parameter. The return value will be between -1 and 1.
import Swiftimport Foundation//positive number in radiansprint("The value of sin(2.3) :", sin(2.3));// negative number in radiansprint("The value of sin(-2.3) :", sin(-2.3));//converting the degrees angle into radians and then applying sin()// degrees = 90.0// PI = 3.14159265print("The value of sin(90.0 * (PI / 180.0)) :", sin(90.0 * (Double.pi / 180.0)));
Foundation header required for the sin() function.sin() to calculate the sine of the positive number in radians.sin() to calculate the sine of the negative number in radians.sin() to convert the angle in degrees to radians and calculated its sine.