Python math.acos() Function

Mathematics

fractions module

module usage

random module

module usage

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random.randint()

random.choice()

Choosing random item(s)

random.choices()

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math module

Introduction

cmath module

math.sin()

math.cos()

math.tan()

math.asin()

math.acos()

math.atan()

math.atan2()

math.sinh()

math.cosh()

math.tanh()

math.asinh()

math.acosh()

math.atanh()

math.exp()

math.pow()

math.sqrt()

math.log()

math.log2()

math.log10()

math.ceil()

math.floor()

math.trunc()

math.modf()

math.fmod()

math.fabs()

math.factorial()

math.gcd()

math.lcm()

math.isqrt()

math.isfinite()

math.isinf()

math.isnan()

math.ldexp()

math.frexp()

math.degrees()

math.radians()

math.copysign()

math.fsum()

math.gamma()

math.hypot()

math.isclose()

math.lgamma()

math.prod()

math.perm()

math.erf()

math.erfc()

math.dist()

math.comb()

math.remainder()

math.pi

math.e

math.inf

math.nan

math.tau

cmath.acosh()

cmath.acos()

cmath.asin()

cmath.asinh()

cmath.atan()

cmath.atanh()

cmath.cos()

cmath.cosh()

cmath.exp()

cmath.isclose()

cmath.isfinite()

cmath.isinf()

cmath.isnan()

cmath.log()

cmath.log10()

cmath.phase()

cmath.polar()

cmath.rect()

cmath.sin()

cmath.sinh()

cmath.sqrt()

cmath.tan()

cmath.tanh()

cmath.e

cmath.inf

cmath.infj

cmath.nan

cmath.nanj

cmath.pi

cmath.tau

The math.acos() function returns the trigonometric inverse cosine(arc cosine) of a number.

math.acos(x)

Where x is the number for which you want to find the inverse cosine.

The function calculates the angle (in radians) whose cosine is equal to x.

import math

number = 0.5
inverse_cosine = math.acos(number)

print(inverse_cosine)

In the above case, the inverse cosine of 0.5 is approximately 1.0471975511965979 radians.

We can use the math.degrees function to turn the radians into degrees.

import math

number = 0.5
inverse_cosine = math.acos(number)

print(math.degrees(inverse_cosine))

import math

print(math.degrees(math.acos(0.7071067811865476)))

print(math.degrees(math.acos(0.30901699437494745)))
print(math.degrees(math.acos(0.17364817766693041)))