What is math.cos() in Scala?
The cos() function in Scala returns the cosine of a number. To be more specific, it returns the cosine of a number in radians.
Figure 1 below shows the mathematical representation of the cos() function.
The
scala.math._header file is required for this function.
This
cos()function only works for right-angled triangles.
Syntax
Double cos(Double number)
Parameter
This function requires a number that represents an angle in radians as a parameter.
To convert degrees to radians, use the formula below.
radians = degrees * ( Pi / 180.0 )
Return value
cos() returns the cosine of a number in radians that is sent as a parameter.
If the parameter value is
or positive infinity or negative infinity, it returns NaN. NaN Not a Number
Code
import scala.math._object Main extends App {//positive number in radiansprintln(s"The value of cos(2.3) = ${cos(2.3)}");// negative number in radiansprintln(s"The value of cos(-2.3) = ${cos(-2.3)}");//converting the degrees angle into radians and then applying cos()// degrees = 45// PI = 3.14159265// result first converts degrees to radians then apply cosprintln(s"The value of cos(45) = ${cos(45 * (Pi / 180))}");//error outputsprintln(s"The value of cos(Double.PositiveInfinity) = ${cos(Double.PositiveInfinity)}");println(s"The value of cos(Double.NegativeInfinity) = ${cos(Double.NegativeInfinity)}");println(s"The value of cos(Double.NaN) = ${cos(Double.NaN)}");}
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