File:Cotangens sumy.svg
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[edit]DescriptionCotangens sumy.svg |
Polski: Przyjmij, że zaznaczony (pogrubiony) odcinek ma długość 1. Wyraź długości pozostałych boków trójkąta, do którego ten odcinek należy, jako funkcje kąta ostrego. Opierając się na już obliczonych długościach boków wyznacz długości pozostałych odcinków na diagramie. Na końcu zbadaj trójkąt, którego kąt ostry to α + β. Zobacz, jak można obliczyć jego cotangens. Możesz także wyprowadzić wzór na cosecans sumy kątów.
English: Assume that the length of the bold-marked segment is equal to 1. Express the length of the other side of the triangle to which this unitary segment belongs as functions of the acute angle. Basing on already computed lengths, find lengths of the other segments in the diagram. Finally check the triangle whose acute angle is α + β. See how to compute its cotangent. You may also derive the formula for cosecans of sum of angles.
Note: ctg is the abbreviation commonly used in Poland for cotangent (instead of cot). |
Date | |
Source | Own work |
Author | Grzegorz Jagodziński |
SVG development InfoField | This diagram was created with Adobe Illustrator. This diagram uses embedded text that can be easily translated using a text editor. |
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current | 20:02, 10 June 2019 | 512 × 672 (2 KB) | Grzegorj (talk | contribs) | User created page with UploadWizard |
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