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Topic: Exsecant

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	Exsecant - Wikipedia, the free encyclopedia
		The exsecant is the portion DE of the secant exterior to (ex) the circle.
		The reason to define a special function for the exsecant is similar to the rationale for the versine: for small angles θ, the sec(θ) function approaches one, and so using the above formula for the exsecant will involve the subtraction of two nearly equal quantities and exacerbate roundoff errors.
		The name exsecant can be understood from a graphical construction, at right, of the various trigonometric functions from a unit circle, such as was used historically.
	en.wikipedia.org /wiki/Exsecant (322 words)

	Trigonometry
		There exist a couple of now unfamiliar functions, the versed sine and the exsecant.
		The versed sine is 1 - cos θ, so it approaches zero as the angle does, but more rapidly.
		The exsecant, sec θ - 1, was useful to surveyors, who are often interested in this distance.
	www.du.edu /~jcalvert/math/trig.htm (5160 words)

	Exsecant (Site not responding. Last check: 2007-10-31)
		exsecant is a valid word in this word list.
		The word "exsecant" uses 8 letters: A C E E N S T X.
		Words within exsecant not shown as it has more than seven letters.
	www.morewords.com /word/exsecant (196 words)

	Exsecant (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-31)
		Please look for Exsecant, Middle School Mathematics and Middle School Mathematics Activities to find more Exsecant information.
		exsecant The trigonometric functions, including the exsecant, can be constructed geometrically in terms of a unit circle centered at O
		Selects bit ravelly exsecant zill edge smolt attorney uncoated yelling work kismats chest pain.
	www.exsecant.info.cob-web.org:8888 (275 words)

	Unit circle - Wikipedia, the free encyclopedia
		However, using the unit circle, these functions have sensible, intuitive meanings for any real-valued angle measure.
		In fact, not only sine and cosine, but all of the six standard trigonometric functions — sine, cosine, tangent, cotangent, secant, and cosecant, as well as archaic functions like versine and exsecant — can be defined geometrically in terms of a unit circle, as shown at right.
		Complex numbers can be identified with points in the Euclidean plane, namely the number a + bi is identified with the point (a, b).
	en.wikipedia.org /wiki/Unit_circle (511 words)

	Multiology Template (Site not responding. Last check: 2007-10-31)
		Many relationships in TotalTrig are not commonly found in trigonometry textbooks today, yet sometimes using one or more of these relationships or equations can make the difference between solving a problem and failing to arrive at a solution.
		TotalTrig has screens explaining the exsecant, versine, coversine, and haversine identities.
		Other screens explain Newton's formula, Mollweide's formula, and how the area of any general triangle is calculated.
	www.multiology.com /palm/TotalTrig.htm (593 words)

	Natural Blogarithms » Blog Archive » Secants and Tangents
		You can also see from the image, how the tangent line at
		You may be wondering, what in the world are versine and exsecant?
		Well, I didn’t know either, but it turns out that they were common historically (and appeared in the earliest tables), but are now seldom used:
	blog.drscottfranklin.net /index.php/2006/09/07/secants-and-tangents (275 words)

	[No title]
		exsecant X = ACOS(1.0 / (Y + 1.0)) !
		compute inverse exsecant (rad) END FUNCTION SAEXSEC !
		compute inverse exsecant (rad) END FUNCTION DAEXSEC !----------------------------------------------------------------------------------------------------------------------------------- !
	home.att.net /~david.g.simpson/Software/auxtrig_f90.txt (1142 words)

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