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== Algebraic value of sin 45° ==
{{ping|DVdm}} reverted my change from
:<math>\sin \frac\pi4 = \sin 45^\circ = \frac{\sqrt{2}}{2} = \frac{\sqrt2}2</math>
to
:<math>\sin \frac\pi4 = \sin 45^\circ = \frac{\sqrt{2}}{2} = \frac{1}{\sqrt2}</math>
with the comment "Sqrt(2)/2 is much more common than 1/sqrt(2) in the literature". Though I understand that √2/2 is more common, the line gives it twice. I wonder if it may help learners to know that both expressions are valid, should they come across the rarer form. Does anyone have any thoughts on this?
Cheers,<br />'''[[User:cmglee|cmɢʟee]]'''⎆[[User_Talk:cmglee|τaʟκ]] 22:55, 5 July 2020 (UTC)
:{{u|Crissov}} added the accidentally duplicate values on [[Special:Diff/937238790|23 January 2020]]. Previously, the values looked [[Special:PermanentLink/937232343#Algebraic values|like this]] and the duplication probably came from the "easy way to remember" values. Probably best to omit. [[User:Johnuniq|Johnuniq]] ([[User talk:Johnuniq|talk]]) 23:57, 5 July 2020 (UTC)
::Yes, I already removed the duplicate values: [https://en.wikipedia.org/w/index.php?title=Trigonometric_functions&type=revision&diff=966142213&oldid=966141888]. - [[User:DVdm|DVdm]] ([[User talk:DVdm|talk]]) 06:33, 6 July 2020 (UTC)
:::It might make sense to add a note to show it either way [[User:Bera678|Bera678]] ([[User talk:Bera678|talk]]) 12:42, 17 December 2023 (UTC)
== Notes and References ==
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