PlanetMath (more info)
 Math for the people, by the people. Sponsor PlanetMath
Encyclopedia | Requests | Forums | Docs | Wiki | Random | RSS  
Login
create new user
name:
pass:
forget your password?
Main Menu
sections
Encyclopædia
Papers
Books
Expositions

meta
Requests (236)
Orphanage
Unclass'd (1)
Unproven (541)
Corrections (47)
Classification

talkback
Polls
Forums
Feedback
Bug Reports

downloads
Snapshots
PM Book

information
News
Docs
Wiki
ChangeLog
TODO List
Copyright
About
Owner confidence rating: High Entry average rating: Very high
[parent] trigonometry (Topic)

Anyone with an account can edit this entry. Please help improve it!

"trigonometry" is owned by rm50. [ full author list (5) | owner history (2) ]
(view preamble | get metadata)

View style:

See Also: definitions in trigonometry, exact trigonometry tables, sohcahtoa, determining signs of trigonometric functions, terminal ray, calculator trigonometric functions, goniometric formulas, sinusoid, cyclometric functions

Also defines:  sine, cosine, tangent, secant, cosecant, cotangent

This object's parent.

Attachments:
table of values for $\sin(x)$ (Example) by drini
table of values for $\cos(x)$ (Example) by drini
table of values for $\tan(x)$ (Example) by drini
$\operatorname{arc tan}$ with two arguments (Definition) by matte
exact trigonometry tables (Example) by stevecheng
goniometric formulas (Topic) by Wkbj79
proof of angle sum identities (Proof) by rspuzio
phase parametrization in $\cos(x+p)=\cos x$ (Definition) by perucho
Log in to rate this entry.
(view current ratings)

Cross-references: formulas, double angle formulas, site, geometric derivation of addition formulas for sine and cosine, proof of angle sum identities, difference, sum, thousands, reflects, radians, in degrees, graph, relations, quotient, negative, analogy, ordinate, projections, distance, coordinates, intersection, terminal ray, positive, axis, ray, plane, origin, complex, even, real, functions, power series, range, calculate, order, angle sum identities, restricted, domain, trigonometric identities, expression, Pythagorean identity, Pythagorean theorem, property, identities, algebra, term, central angle, circumferential angle, arc, chord, definitions, right triangle, leg, similarity, similar, triangles, radius, ratio, trigonometric functions, angle, center, point, unit circle, quadrant, right, diagram, circles, lines, lengths, measure
There are 88 references to this entry.

This is version 28 of trigonometry, born on 2005-02-22, modified 2007-12-09.
Object id is 6807, canonical name is Trigonometry.
Accessed 26343 times total.

Classification:
AMS MSC: 33B10 (Special functions :: Elementary classical functions :: Exponential and trigonometric functions)
 42-00 (Fourier analysis :: General reference works )
 51-00 (Geometry :: General reference works )
 43-00 (Abstract harmonic analysis :: General reference works )
Pending Errata and Addenda
None.
[ View all 5 ]
Discussion
Style: Expand: Order:
forum policy
Trigonometry discussion page by rspuzio on 2005-02-23 14:47:05
Please post all further discussion of this entry to the following webpage:

http://oddwiki.taoriver.net/wiki.pl/AsteroidMeta/Discussion_of_Trigonometry
[ reply | up ]
basic trigonometric entry by drini on 2005-02-22 21:26:43
to my surprise there wasn't an entry defining and dealing and defining the elementary trigonometric functions, so I went and created this.

I know this entry is the kind of entry that will generate a long thread about comments, suggestions criticism and all that jazz, so why don't someone better sets up an asteroidmeta page for this so we can avoid polluting the page (and making it a lot larger and slower to load ;)

It's incomplete as it stands right now, but I'm making it world editable so anyone can work on it directly. Ah, and I'd like it to keep it as real trig mostly entru, so please do not dwell too much into complex analysis (perhaps just some mention and references)
 f
G -----> H G
p \ /_ ----- ~ f(G)
 \ / f ker f
 G/ker f 
[ reply | up ]
Interact
post | correct | update request | add example | add (any)