{"id":5486,"date":"2025-07-15T13:34:44","date_gmt":"2025-07-15T13:34:44","guid":{"rendered":"https:\/\/functiontranslator.com\/cos\/"},"modified":"2021-02-26T09:52:04","modified_gmt":"2021-02-26T09:52:04","slug":"cos","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/cos\/","title":{"rendered":"COS"},"content":{"rendered":"

\u00davod<\/h2>\n

Funkce pro v\u00fdpo\u010det kosinu je b\u011b\u017en\u011b dostupn\u00e1 v mnoha tabulkov\u00fdch editorech, v\u010detn\u011b MS Excelu a Google Tabulek. Tato matematick\u00e1 funkce se pou\u017e\u00edv\u00e1 k v\u00fdpo\u010dtu kosinu dan\u00e9ho \u00fahlu, kter\u00fd je zad\u00e1n v radi\u00e1nech. V\u00fdsledky jsou u\u017eite\u010dn\u00e9 v r\u016fzn\u00fdch oblastech, v\u010detn\u011b fyziky, stroj\u00edrenstv\u00ed a dal\u0161\u00edch v\u011bdn\u00edch discipl\u00edn.<\/p>\n

Syntaxe a pou\u017eit\u00ed<\/h2>\n

V obou aplikac\u00edch, MS Excel i Google Tabulky, m\u00e1 funkce pro v\u00fdpo\u010det kosinu stejnou z\u00e1kladn\u00ed syntaxi:<\/p>\n

=COS(\u00fahel)<\/code><\/pre>\n
kde \u00fahel<\/code> je \u00fahel v radi\u00e1nech, pro kter\u00fd chceme vypo\u010d\u00edtat kosinus.<\/p>\n
Pro p\u0159evod stup\u0148\u016f na radi\u00e1ny m\u016f\u017eete pou\u017e\u00edt dodate\u010dnou funkci, kter\u00e1 je k tomu ur\u010dena:<\/p>\n
=RADIANS(stupn\u011b)<\/code><\/pre>\n
P\u0159\u00edklad pou\u017eit\u00ed pro v\u00fdpo\u010det kosinu 60 stup\u0148\u016f v Excelu a Google Tabulk\u00e1ch:<\/p>\n
=COS(RADIANS(60))<\/code><\/pre>\n
Tento p\u0159\u00edklad vrac\u00ed hodnotu kosinu pro 60 stup\u0148\u016f, co\u017e je p\u0159ibli\u017en\u011b 0.5.<\/p>\n
Praktick\u00e9 \u00fakoly a jejich \u0159e\u0161en\u00ed<\/h2>\n
\u00dakol 1: V\u00fdpo\u010det kosinu zadan\u00fdch \u00fahl\u016f<\/h3>\n
P\u0159edstavme si, \u017ee pot\u0159ebujeme vypo\u010d\u00edtat kosinus pro \u00fahly 30, 45 a 90 stup\u0148\u016f a zaznamenat v\u00fdsledky v tabulce. \u0158e\u0161en\u00ed vypad\u00e1 takto:<\/p>\n
    \n
  • Vytvo\u0159\u00edme v tabulce t\u0159i bu\u0148ky, nap\u0159\u00edklad A1, A2 a A3.<\/li>\n
  • Do bu\u0148ky A1 vlo\u017e\u00edme: =COS(RADIANS(30))<\/code><\/li>\n
  • Do bu\u0148ky A2 vlo\u017e\u00edme: =COS(RADIANS(45))<\/code><\/li>\n
  • Do bu\u0148ky A3 vlo\u017e\u00edme: =COS(RADIANS(90))<\/code><\/li>\n<\/ul>\n
    V\u00fdsledek bude ukazovat, \u017ee kosinus 90 stup\u0148\u016f je 0, co\u017e odpov\u00edd\u00e1 tomu, \u017ee kosinus prav\u00e9ho \u00fahlu je nula.<\/p>\n
    \u00dakol 2: Vyu\u017eit\u00ed funkce v trigonometrick\u00fdch v\u00fdpo\u010dtech<\/h3>\n
    P\u0159edpokl\u00e1dejme, \u017ee pot\u0159ebujeme vypo\u010d\u00edtat d\u00e9lku p\u0159ilehl\u00e9 strany v pravo\u00fahl\u00e9m troj\u00faheln\u00edku, kde zn\u00e1me d\u00e9lku p\u0159epony (10 metr\u016f) a \u00fahel (45 stup\u0148\u016f). Zde vyu\u017eijeme vlastnosti kosinu:<\/p>\n
      \n
    • P\u0159ilehl\u00e1 strana = p\u0159epona \u00d7 COS(\u00fahel)<\/li>\n
    • D\u00e9lka p\u0159ilehl\u00e9 strany bude tedy vypo\u010dtena jako: =10 * COS(RADIANS(45))<\/code><\/li>\n<\/ul>\n
      Tento p\u0159\u00edklad n\u00e1m vr\u00e1t\u00ed d\u00e9lku p\u0159ilehl\u00e9 strany, kter\u00e1 je p\u0159ibli\u017en\u011b 7.07 metr\u016f, vzhledem k tomu, \u017ee COS(45 stup\u0148\u016f) je p\u0159ibli\u017en\u011b 0.707.<\/p>\n
      Z\u00e1v\u011br<\/h2>\n
      Funkce pro v\u00fdpo\u010det kosinu je velice u\u017eite\u010dn\u00e1 ve v\u011bdeck\u00fdch a in\u017een\u00fdrsk\u00fdch oblastech pro pr\u00e1ci s \u00fahly a trigonometrick\u00fdmi v\u00fdpo\u010dty. P\u0159esn\u00e9 poznav\u00e1n\u00ed jej\u00edho pou\u017eit\u00ed v MS Excelu a Google Tabulk\u00e1ch umo\u017e\u0148uje u\u017eivatel\u016fm efektivn\u011b \u0159e\u0161it mnoho praktick\u00fdch \u00fakol\u016f a probl\u00e9m\u016f spojen\u00fdch s \u00fahlov\u00fdmi m\u011b\u0159en\u00edmi.<\/p>\n","protected":false},"excerpt":{"rendered":"
      Vr\u00e1t\u00ed kosinus \u010d\u00edsla<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[282],"tags":[],"class_list":["post-5486","post","type-post","status-publish","format-standard","hentry","category-matematicke-a-trigonometricke"],"acf":[],"yoast_head":"\nFunkce COS v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije COS u Excelu i Google tablicama. 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