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Kosinus je goniometrická funkce úhlu. Zapisuje se jako cos φ {\displaystyle \cos \varphi } , kde φ {\displaystyle \varphi } je velikost úhlu. Pro ostré úhly je definována v pravoúhlém trojúhelníku jako poměr přilehlé odvěsny a přepony (nejdelší strany). Alternativně lze kosinus definovat jako posunutí sinu po ose x {\displaystyle x} vlevo o úhel π 2…
Kosinus v reálném oboru, Kosinus v komplexním oboru & Kosinus na jednotkové kružnici
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displaystyle funkce cos pi jako úhlu lze sin frac jednotkové celé alpha úhel left right kolmice kružnici oboru čísla definována
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Kosinus | related to Externí odkazy | Obrázky | 0.60 | section |
| Kosinus | related to Externí odkazy | Wikimedia Commons Slovníkové | 0.60 | section |
| Kosinus | related to Externí odkazy | Wikislovníku | 0.60 | section |
| Kosinus | related to Kosinus na jednotkové kružnici | Je-li | 0.60 | section |
| Kosinus | related to Kosinus na jednotkové kružnici | Délce | 0.60 | section |
| Kosinus | related to Kosinus na jednotkové kružnici | Poloměr | 0.60 | section |
| Kosinus | related to Kosinus na jednotkové kružnici | Pythagorova | 0.60 | section |
| Kosinus | related to Kosinus v komplexním oboru | Funkce | 0.60 | section |
| Kosinus | related to Kosinus v komplexním oboru | Pro | 0.60 | section |
| Kosinus | related to Kosinus v reálném oboru | Funkce | 0.60 | section |
| Kosinus | related to Kosinus v reálném oboru | Definiční | 0.60 | section |
| Kosinus | related to Kosinus v reálném oboru | Obor | 0.60 | section |
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