## 21 Nov C – Math Functions

As the name suggests, the Math Functions in C language are used to perform mathematical tasks such as returning the sine, cosine, cube root, absolute value, etc. To work on Math Functions in C language, use the following header file:

Include it in your program file:

Here are the popular math functions in C language and what they will return after execution:

• sqrt(a): square root of a
• exp(a): e raised to the power of an i.e., Ea
• cos(a): cosine of a
• sin(a): sine of a
• tan(a): tangent of an angle
• acos(a): arccosine of a
• asin(a): arcsine of a
• atan(a): arctangent of a
• ceil(a): rounds upwards to its nearest integer
• floor(a): rounds a downwards to its nearest integer

Let us now see the above math functions one by one with examples:

## sqrt() in C Language

The sqrt() function in C is used to get the square root of a number.

Let us now see an example of the sqrt() function:

Output

## exp() in C Language

The exp() function in C is used to return e raised to the power of a.

Let us now see an example of the exp() function:

Output

## cos() in C Language

The cos() function in C  returns the cosine of a.

Let us now see an example of the cos() function:

Output

## sin() in C Language

The sin() function in C returns the sin of a.

Let us now see an example of the sin() function:

Output

## tan() in C Language

The tan() function in C is used to return the tangent of a.

Let us now see an example of the tan() function:

Output

## acos() in C Language

The acos() function in C returns the arc cosine of a in radians.

Let us now see an example of the acos() function:

Output

## asin() in C Language

The asin() function in C  returns the arc sine of a in radians.

Let us now see an example of the asin() function:

Output

## atan() in C Language

The atan() function in C  returns the arc tangent of a in radians.

Let us now see an example of the atan() function:

Output

## cosh() in C Language

The cosh() function in C returns the hyperbolic cos of a.

Let us now see an example of the cosh() function:

Output

## sinh() in C Language

The sinh() function in C  returns the hyperbolic sine of a.

Let us now see an example of the sinh() function:

Output

## tanh() in C Language

The tanh() function in C  returns the hyperbolic tangent of a.

Let us now see an example of the tanh() function:

Output

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