# atanh

It returns  Inverse hyperbolic tangent
Example

<?php
echo atanh(.17);
?>

Output

0.17166666350058

# atan

It  returns Arc tangent

Example

<?php
echo atan(.50);
?>

Output

0.46364760900081

# atan2

It  returns arc tangent of two variables
Example

<?php
echo atan2(17,17);
?>

Output

0.78539816339745

# asinh

It returns  Inverse hyperbolic sine

Example

<?php
echo asinh(.90);
?>

Output

0.80886693565278

# asin

It returns  arc sine

Example

<?php
echo asin(.90);
?>

Output

1.1197695149986

# acosh

It returns  Inverse hyperbolic cosine

Example

<?php
echo acosh(90);
?>

Output

5.1929259852637

# acos

It returns arccosine value

Example

<?php
echo acos(.90);
?>

Output

0.45102681179626

# abs

It returns absolute value

Example

<?php
echo \$abs = abs(-1.7);
?>

Output

1.7

# Math functions

• abs – It returns absolute value
• acos – It returns arccosine value
• acosh – It returns Inverse hyperbolic cosine
• asin – It returns arc sine
• asinh – It returns Inverse hyperbolic sine
• atan2 – It returns Arc tangent of two variables
• atan – It returns Arc tangent
• atanh – It  returns Inverse hyperbolic tangent
• base_convert – It convert a number between arbitrary bases
• bindec – It converts binary number to decimal number
• ceil – It round the fractions up
• cos – It returns cosine value .
• cosh – It returns Hyperbolic cosine .
• decbin – It converts a decimal to binary
• dechex – It converts a decimal to hexadecimal
• decoct – It converts a decimal to octal
• deg2rad – It converts the number in degrees to the radian equivalent
• exp – It calculates the exponent of e
• expm1 – It calculates the value of Ex-1
• floor – It round fractions down
• fmod – It returns the remainder of the division.
• getrandmax – It shows largest possible random value
• hexdec – It converts Hexadecimal to decimal
• hypot – It calculate the length of the hypotenuse
• is_finite – It checks whether a value is a legal finite number
• is_infinite – It checks whether a value is a legal infinite number
• is_nan – It checks whether a value is not a number
• lcg_value – It returns combined linear congruential generator
• log10 – It returns Base-10 logarithm value
• log1p – It returns log(1+x)
• log – It returns natural logarithm
• max – It returns maximum value
• min – It returns lowest value
• mt_getrandmax – It returns largest possible random value
• mt_rand – It generates a better random value
• mt_srand – It seed the better random number generator
• octdec – It converts octal number to decimal
• pi – It returns the value of pi
• pow – It returns Exponential expression
• rad2deg – It converts the radian number to the equivalent number in degrees
• rand – It generates a random integer
• round – It rounds a float
• sin – it returns sine value
• sinh – it returns hyperbolic sine
• sqrt – It returns Square root
• srand – It seed the random number generator
• tan – It returns tangent value
• tanh – It returns hyperbolic tangent