PHP Math Trignometric Functions

acos():The "acos" function returns the arc cosine of the number in radians.

acoh():The "acosh" function returns the inverse hyperbolic cosine.

asin():The "asin" function returns the arc sine value for the given number.

asinh():The "asinh" function returns the inverse hyperbolic sine of a number.

atan2():The "atan2" function returns arc tangent of two variables.

atan():The "atan" function returns arc tangent of the variable.

atanh():The "atanh" function returns inverse hyperbolic tangent of the variable.

cos():The "cos" function returns the cosine of a number.

cosh():The "cosh" function returns the hyperbolic cosine of a number.

sin():The "sin" function returns the sine of a number.

sinh():The "sinh" function returns the hyperbolic sine of a number.

tan():The "tan" function returns a number that represents the tangent of an angle.

tanh():The "tanh()" function returns the hyperbolic tangent of an angle.