Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Inverse trigonometric functions
open-in-new
<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, the inverse trigonometric functions (occasionally also called <i>antitrigonometric</i>, <i>cyclometric</i>, or <i>arcus</i> functions) are the <a href="/facts/Inverse_function/Tg5nnXlu">inverse functions</a> of the <a href="/facts/Trigonometric_functions/czej7ur0">trigonometric functions</a>, under suitably restricted <a href="/facts/Domain_of_a_function/FQvoeUpX">domains</a>. Specifically, they are the inverses of the <a href="/facts/Sine/gQ6LXK8z">sine</a>, <a href="/facts/Cosine/czej7ur0">cosine</a>, <a href="/facts/Tangent_(trigonometry)/czej7ur0">tangent</a>, <a href="/facts/Cotangent/czej7ur0">cotangent</a>, <a href="/facts/Secant_(trigonometry)/czej7ur0">secant</a>, and <a href="/facts/Cosecant/czej7ur0">cosecant</a> functions, and are used to obtain an angle from any of the angle's trigonometric ratios. Inverse trigonometric functions are widely used in <a href="/facts/Engineering/RFVg8H3I">engineering</a>, <a href="/facts/Navigation/sGGAJ0AQ">navigation</a>, <a href="/facts/Physics/a7aH2y08">physics</a>, and <a href="/facts/Geometry/wTQf5ffQ">geometry</a>. </p>