ArcSecDegrees
✖
ArcSecDegrees
Details

- ArcSecDegrees, along with other inverse trigonometric and trigonometric functions, is studied in high-school geometry courses and is also used in many scientific disciplines.
- All results are given in degrees.
- For real
outside the interval
to
, the results are always in the range
to
, excluding
.
- ArcSecDegrees[z] returns the angle
in degrees for which the ratio of the hypotenuse to the adjacent side of a right triangle is
.
- For certain special arguments, ArcSecDegrees automatically evaluates to exact values.
- ArcSecDegrees can be evaluated to arbitrary numerical precision.
- ArcSecDegrees automatically threads over lists.
- ArcSecDegrees[z] has a branch cut discontinuity in the complex
plane running from
to
.
- ArcSecDegrees can be used with Interval, CenteredInterval and Around objects.
- Mathematical function, suitable for both symbolic and numerical manipulation.

Examples
open allclose allBasic Examples (7)Summary of the most common use cases

https://wolfram.com/xid/0fq66zj02rjck-c8qfg

Calculate the angle BAC of this right triangle:


https://wolfram.com/xid/0fq66zj02rjck-qhoj8b

The numerical value of this angle:

https://wolfram.com/xid/0fq66zj02rjck-yqnf8d

Solve an inverse trigonometric equation:

https://wolfram.com/xid/0fq66zj02rjck-0yb4bb

Solve an inverse trigonometric inequality:

https://wolfram.com/xid/0fq66zj02rjck-m2b8vb

Apply ArcSecDegrees to the following list:

https://wolfram.com/xid/0fq66zj02rjck-8uoawe

Plot over a subset of the reals:

https://wolfram.com/xid/0fq66zj02rjck-lkzh8

Asymptotic expansion at Infinity:

https://wolfram.com/xid/0fq66zj02rjck-0dztkz

Scope (37)Survey of the scope of standard use cases
Numerical Evaluation (6)

https://wolfram.com/xid/0fq66zj02rjck-da1yw


https://wolfram.com/xid/0fq66zj02rjck-fp1tk9

The precision of the output tracks the precision of the input:

https://wolfram.com/xid/0fq66zj02rjck-ntnsyn

Evaluate for complex arguments:

https://wolfram.com/xid/0fq66zj02rjck-bt9pr

Evaluate ArcSecDegrees efficiently at high precision:

https://wolfram.com/xid/0fq66zj02rjck-di5gcr


https://wolfram.com/xid/0fq66zj02rjck-bq2c6r

Compute worst-case guaranteed intervals using Interval and CenteredInterval objects:

https://wolfram.com/xid/0fq66zj02rjck-m0fih


https://wolfram.com/xid/0fq66zj02rjck-lmyeh7


https://wolfram.com/xid/0fq66zj02rjck-6flll

Or compute average-case statistical intervals using Around:

https://wolfram.com/xid/0fq66zj02rjck-cw18bq

Compute the elementwise values of an array:

https://wolfram.com/xid/0fq66zj02rjck-duygp2

Or compute the matrix ArcSecDegrees function using MatrixFunction:

https://wolfram.com/xid/0fq66zj02rjck-o5jpo

Specific Values (5)
Values of ArcSecDegrees at fixed points:

https://wolfram.com/xid/0fq66zj02rjck-nww7l

Simple exact values are generated automatically:

https://wolfram.com/xid/0fq66zj02rjck-xirge


https://wolfram.com/xid/0fq66zj02rjck-gp8fq9


https://wolfram.com/xid/0fq66zj02rjck-drqkdo

Zero of ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-cw39qs

Find the value of satisfying equation
:

https://wolfram.com/xid/0fq66zj02rjck-f2hrld

https://wolfram.com/xid/0fq66zj02rjck-op0v0e


https://wolfram.com/xid/0fq66zj02rjck-yei1qb


https://wolfram.com/xid/0fq66zj02rjck-du4pxr

Visualization (4)
Plot the ArcSecDegrees function:

https://wolfram.com/xid/0fq66zj02rjck-ecj8m7

Plot over a subset of the complexes:

https://wolfram.com/xid/0fq66zj02rjck-kiedlx

Plot the real part of ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-bo5grg

Plot the imaginary part of ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-bac0f3

Polar plot with ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-opbogl

Function Properties (10)
ArcSecDegrees is defined for all real values except from the interval :

https://wolfram.com/xid/0fq66zj02rjck-cl7ele


https://wolfram.com/xid/0fq66zj02rjck-de3irc

ArcSecDegrees achieves all real values from the interval except
:

https://wolfram.com/xid/0fq66zj02rjck-evf2yr


https://wolfram.com/xid/0fq66zj02rjck-jg5825

ArcSecDegrees is not an analytic function:

https://wolfram.com/xid/0fq66zj02rjck-h5x4l2


https://wolfram.com/xid/0fq66zj02rjck-e434t9

ArcSecDegrees is monotonic in a specific range:

https://wolfram.com/xid/0fq66zj02rjck-g6kynf


https://wolfram.com/xid/0fq66zj02rjck-5pj03b


https://wolfram.com/xid/0fq66zj02rjck-fz9c6h


https://wolfram.com/xid/0fq66zj02rjck-m4ykug

ArcSecDegrees is injective:

https://wolfram.com/xid/0fq66zj02rjck-gi38d7


https://wolfram.com/xid/0fq66zj02rjck-ctca0g

ArcSecDegrees is not surjective:

https://wolfram.com/xid/0fq66zj02rjck-hkqec4


https://wolfram.com/xid/0fq66zj02rjck-hdm869

ArcSecDegrees is non-negative on its real domain:

https://wolfram.com/xid/0fq66zj02rjck-84dui

It has both singularity and discontinuity for x in [-1,1]:

https://wolfram.com/xid/0fq66zj02rjck-mdtl3h


https://wolfram.com/xid/0fq66zj02rjck-mn5jws

ArcSecDegrees is neither convex nor concave:

https://wolfram.com/xid/0fq66zj02rjck-kdss3

ArcSecDegrees is concave for x in [1,∞):

https://wolfram.com/xid/0fq66zj02rjck-io426y


https://wolfram.com/xid/0fq66zj02rjck-bb47uv

TraditionalForm formatting:

https://wolfram.com/xid/0fq66zj02rjck-6k0d4

Differentiation (3)

https://wolfram.com/xid/0fq66zj02rjck-mmas49


https://wolfram.com/xid/0fq66zj02rjck-nfbe0l


https://wolfram.com/xid/0fq66zj02rjck-fxwmfc


https://wolfram.com/xid/0fq66zj02rjck-56llx

Integration (2)
Indefinite integral of ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-bponid

Definite integral over the interval :

https://wolfram.com/xid/0fq66zj02rjck-b9jw7l

Series Expansions (4)
Find the Taylor expansion using Series:

https://wolfram.com/xid/0fq66zj02rjck-ewr1h8

Plot the first three approximations for ArcSecDegrees around :

https://wolfram.com/xid/0fq66zj02rjck-binhar

Find series expansions at branch points and branch cuts:

https://wolfram.com/xid/0fq66zj02rjck-cn01tz


https://wolfram.com/xid/0fq66zj02rjck-cwcy3c

Asymptotic expansion at a singular point:

https://wolfram.com/xid/0fq66zj02rjck-7r8efp

ArcSecDegrees can be applied to power series:

https://wolfram.com/xid/0fq66zj02rjck-bjwx3j

Function Identities and Simplifications (2)
Simplify expressions involving ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-u9xlpa

Use TrigToExp to express through logarithms and square roots:

https://wolfram.com/xid/0fq66zj02rjck-b85ut5

Function Representations (1)
Applications (6)Sample problems that can be solved with this function
Solve inverse trigonometric equations:

https://wolfram.com/xid/0fq66zj02rjck-r2v


https://wolfram.com/xid/0fq66zj02rjck-teb

Solve an inverse trigonometric equation with a parameter:

https://wolfram.com/xid/0fq66zj02rjck-uqw

Use Reduce to solve inequalities involving ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-d4vbx8

Numerically find a root of a transcendental equation:

https://wolfram.com/xid/0fq66zj02rjck-fwo

Plot the function to check if the solution is correct:

https://wolfram.com/xid/0fq66zj02rjck-ds23ya

Plot the real and imaginary parts of ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-nuyb2x

Different combinations of ArcSecDegrees with trigonometric functions:

https://wolfram.com/xid/0fq66zj02rjck-k5texy

Properties & Relations (6)Properties of the function, and connections to other functions
Compositions with the inverse trigonometric functions:

https://wolfram.com/xid/0fq66zj02rjck-guzqsd

Use PowerExpand to disregard multivaluedness of the ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-3u

Alternatively, evaluate under additional assumptions:

https://wolfram.com/xid/0fq66zj02rjck-gywjjy

Use FunctionExpand to convert trigs of arctrigs into an algebraic function:

https://wolfram.com/xid/0fq66zj02rjck-ul1xu1


https://wolfram.com/xid/0fq66zj02rjck-tphn2v

This shows the branch cut of the ArcSecDegrees function:

https://wolfram.com/xid/0fq66zj02rjck-ie1tol

ArcSecDegrees gives the angle in degrees, while ArcSec gives the same angle in radians:

https://wolfram.com/xid/0fq66zj02rjck-qtrjkp


https://wolfram.com/xid/0fq66zj02rjck-pvtedq

FunctionExpand applied to ArcSecDegrees generates expressions in trigonometric functions in radians:

https://wolfram.com/xid/0fq66zj02rjck-fujuf5


https://wolfram.com/xid/0fq66zj02rjck-roe9wv

ExpToTrig applied to the outputs of TrigToExp will generate trigonometric functions in radians:

https://wolfram.com/xid/0fq66zj02rjck-nsm


https://wolfram.com/xid/0fq66zj02rjck-bqfsv5

Neat Examples (2)Surprising or curious use cases
Solve trigonometric equations involving ArcSecDegrees:

https://wolfram.com/xid/0fq66zj02rjck-rm9at4

Numerical value of this angle in degrees:

https://wolfram.com/xid/0fq66zj02rjck-yifbtl

Plot ArcSecDegrees at integer points:

https://wolfram.com/xid/0fq66zj02rjck-xcb

Wolfram Research (2024), ArcSecDegrees, Wolfram Language function, https://reference.wolfram.com/language/ref/ArcSecDegrees.html.
Text
Wolfram Research (2024), ArcSecDegrees, Wolfram Language function, https://reference.wolfram.com/language/ref/ArcSecDegrees.html.
Wolfram Research (2024), ArcSecDegrees, Wolfram Language function, https://reference.wolfram.com/language/ref/ArcSecDegrees.html.
CMS
Wolfram Language. 2024. "ArcSecDegrees." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ArcSecDegrees.html.
Wolfram Language. 2024. "ArcSecDegrees." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ArcSecDegrees.html.
APA
Wolfram Language. (2024). ArcSecDegrees. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ArcSecDegrees.html
Wolfram Language. (2024). ArcSecDegrees. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ArcSecDegrees.html
BibTeX
@misc{reference.wolfram_2025_arcsecdegrees, author="Wolfram Research", title="{ArcSecDegrees}", year="2024", howpublished="\url{https://reference.wolfram.com/language/ref/ArcSecDegrees.html}", note=[Accessed: 25-May-2025
]}
BibLaTeX
@online{reference.wolfram_2025_arcsecdegrees, organization={Wolfram Research}, title={ArcSecDegrees}, year={2024}, url={https://reference.wolfram.com/language/ref/ArcSecDegrees.html}, note=[Accessed: 25-May-2025
]}