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The external secant function (abbreviated exsecant, symbolized exsec) is a trigonometric function defined in terms of the secant function: exsec θ = sec θ − 1 = 1 cos θ − 1. {\displaystyle \operatorname {exsec} \theta =\sec \theta -1={\frac {1}{\cos \theta }}-1.}
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secant trigonometric displaystyle function used angle operatorname external exsec line segment circle railroad sec versine circular theta tables track century
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| this one | instance of | the availability of calculators and computers has removed the need for trigonometric tables of specialized functions | 0.80 | text |
| Exsecant | related to Calculus | While | 0.60 | section |
| Exsecant | related to Calculus | See | 0.60 | section |
| Exsecant | related to Calculus | Integral | 0.60 | section |
| Exsecant | related to Catastrophic cancellation for small angles | Naïvely | 0.60 | section |
| Exsecant | related to Catastrophic cancellation for small angles | Computing | 0.60 | section |
| Exsecant | related to Catastrophic cancellation for small angles | For | 0.60 | section |
| Exsecant | related to Catastrophic cancellation for small angles | If | 0.60 | section |
| Exsecant | related to Double angle identity | The | 0.60 | section |
| Exsecant | related to history | In | 0.60 | section |
| Exsecant | related to history | Surveyors | 0.60 | section |
| Exsecant | related to history | Using | 0.60 | section |
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