Talk:Unit circle

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This was a duplicate page, at "Unit Circle":

The Unit Circle is a circle of radius 1 unit, oftenly used to define the functions of trigonometry.

In this diagram, individual points on the unit circle are labeled first with its coordinates (exact values), with the angle in degree angular measure, then with radian angular measure. Points in the lower hemisphere have both positive and negative angles marked.

Image:Radian unit circle.gif


Geometers notation S2: really? I don't think I have ever seen this - which is not to say it isn't used, but is it common enough to warrant inclusion?

Charles Matthews 12:30, 17 Aug 2004 (UTC)

In the representation of the triginometric functions in the unit circle, it would be useful to add that the values of the tangent of an angle theta are also represented by the vertical tangent to the unit circle and the values of the co-tangent by the horizontal tangent.

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[edit] why doesn't anyone like math?

i really like what we're doing in calculus, but everybody hates math...why is that?

There are many people who like math. However, this isn't the right place for this question - try Wikipedia:Reference desk/Mathematics instead (in fact, I think it was asked there some time ago, maybe you should try looking in the archives for some useful responses). -- Meni Rosenfeld (talk) 20:33, 1 December 2006 (UTC)

[edit] Image at bottom of page

What is the image at the bottom of the page for? I don't think a discussion of a circle of radius 1 versus a circle of diameter 1 has any place on this page.

Matulga 21:11, 10 December 2006 (UTC)

[edit] Circle-trig6.svg

The image Circle-trig6.svg doesn't even come close to printing out correctly for me.

[edit] Euclidean plane

'Euclidean plane' is (deliberately?) unclickable. Are we, here, at the boundary between elicitation of responses to multiple-choice questions and professing of purported facts? Knotwork (talk) 20:24, 23 April 2008 (UTC)