Inverse trigonometric functions: Difference between revisions

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=== Relationships between trigonometric functions and inverse trigonometric functions ===

Trigonometric functions of inverse trigonometric functions are tabulated below. A quick way to derive them is by considering the geometry of a right-angled triangle, with one side of length 1 and another side of length ''x'', then applying the [[Pythagorean theorem]] and definitions of the trigonometric ratios. Purely algebraic derivations are longer.{{citation needed|date=May 2016}} It's worth noting that for arcsecant and arccosecant, the diagram assumes that x is positive, and thus the result has to be corrected through the use of [[absolute value]]<nowiki/>s and the [[Sign function|signum]] (sgn) operation.

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