# Getting cosine and hyperbolic cosine in Julia – cos(), cosh() and cosd() Methods

• Last Updated : 26 Mar, 2020

The `cos()` is an inbuilt function in julia which is used to calculate cosine of the specified radian values.

Syntax: cos(x)

Parameters:

Returns: It returns the calculated cosine of the specified radian values.

Example:

 `# Julia program to illustrate ``# the use of cos() method`` ` `# Getting cosine of the specified``# radian values.``println(cos(``0``))``println(cos(``30``))``println(cos(``90``))``println(cos(``44``))`

Output:

```1.0
0.15425144988758405
-0.4480736161291702
0.9998433086476912```

The `cosh()` is an inbuilt function in julia which is used to calculate hyperbolic cosine of the specified values.

Syntax: cosh(x)

Parameters:

• x: Specified values.

Returns: It returns the calculated hyperbolic cosine of the specified values.

Example:

 `# Julia program to illustrate ``# the use of cosh() method`` ` `# Getting cosine of the specified values.``println(cosh(``0``))``println(cosh(``30``))``println(cosh(``90``))``println(cosh(``45``))`

Output:

```1.0
5.343237290762231e12
6.102016471589204e38
1.7467135528742547e19```

The `cosd()` is an inbuilt function in julia which is used to calculate cosine of the specified value in degrees.

Syntax: cosd(x)

Parameters:

• x: Specified value in degrees.

Returns: It returns the calculated cosine of the specified value in degrees.

Example:

 `# Julia program to illustrate ``# the use of cosd() method`` ` `# Getting cosine of the specified value ``# in degree``println(cosd(``0``))``println(cosd(``30``))``println(cosd(``90``))``println(cosd(``45``))`

Output:

```1.0
0.8660254037844386
0.0
0.7071067811865476```

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