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The nice thing about the '''A'''rc- names is that they always remind you that the arc functions give back an '''A'''ngle. Look at some complicated formula involving arctans and arcsines and at least you know the 'arcs' are giving you nothing more complicated than an angle. [[User:Acorrector|Acorrector]] ([[User talk:Acorrector|talk]]) 11:52, 22 November 2021 (UTC)
== Solutions to elementary trigonometric equations ==
The 4th column in the first table of the section contains typographical errors in rows 4 and 5.
Moreover, in the 4th column of rows 3, 4, 5 it may be questioned whether <math>k \pi</math> is overspecified in the light of the <math>\Longdoublearrow</math> and the rows 1, 2, 6, 7, 8. [[User:Nomen4Omen|Nomen4Omen]] ([[User talk:Nomen4Omen|talk]]) 15:31, 18 September 2022 (UTC)
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