[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.toxio.cz\/seznamte-se-se-sinusovym-pravitkem\/#Article","mainEntityOfPage":"https:\/\/www.toxio.cz\/seznamte-se-se-sinusovym-pravitkem\/","headline":"Seznamte se se sinusov\u00fdm prav\u00edtkem","name":"Seznamte se se sinusov\u00fdm prav\u00edtkem","description":"Kdy\u017e se d\u011bti na z\u00e1kladn\u00ed \u0161kole seznamuj\u00ed s geometri\u00ed, jej\u00ed sou\u010d\u00e1st\u00ed jsou tak\u00e9 \u00fahly. Maj\u00ed k dispozici \u00fahlom\u011br a r\u00fdsuj\u00ed po pap\u00ed\u0159e geometrick\u00e9 \u00fatvary s … ","datePublished":"2025-01-24","dateModified":"2025-01-24","author":{"@type":"Person","@id":"https:\/\/www.toxio.cz\/author\/#Person","name":"","url":"https:\/\/www.toxio.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/91b1fc57487c55a66a7777af0dd690bf69c571b4a9b15cda0db8854a78b7888c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/91b1fc57487c55a66a7777af0dd690bf69c571b4a9b15cda0db8854a78b7888c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"toxio.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.toxio.cz\/wp-content\/uploads\/pendulum-626622_640.jpg","url":"https:\/\/www.toxio.cz\/wp-content\/uploads\/pendulum-626622_640.jpg","height":0,"width":0},"url":"https:\/\/www.toxio.cz\/seznamte-se-se-sinusovym-pravitkem\/","wordCount":423,"articleBody":"   Kdy\u017e se d\u011bti na z\u00e1kladn\u00ed \u0161kole seznamuj\u00ed s geometri\u00ed, jej\u00ed sou\u010d\u00e1st\u00ed jsou tak\u00e9 \u00fahly. Maj\u00ed k dispozici \u00fahlom\u011br a r\u00fdsuj\u00ed po pap\u00ed\u0159e geometrick\u00e9 \u00fatvary s ostr\u00fdmi nebo tup\u00fdmi \u00fahly. Je-li zapot\u0159eb\u00ed \u00fahel zm\u011b\u0159it, \u00fahlom\u011br je pom\u011brn\u011b p\u0159esn\u00e9 m\u011b\u0159idlo, sta\u010d\u00ed jej p\u0159ilo\u017eit k nar\u00fdsovan\u00fdm p\u0159\u00edmk\u00e1m \u010di \u00fase\u010dk\u00e1m a ode\u010d\u00edst hodnotu na stupnici. M\u011b\u0159en\u00ed \u00fahl\u016f na dvojrozm\u011brn\u00e9 plo\u0161e, na pap\u00ed\u0159e, je tedy snadn\u00e9, ale co kdy\u017e pot\u0159ebujete p\u0159esn\u011b prom\u011b\u0159it \u00fahel u prostorov\u00fdch objekt\u016f? Co kdy\u017e m\u00e1te nap\u0159\u00edklad v ruce kovov\u00fd obrobek ku\u017eelov\u00e9ho tvaru, zhotoven\u00fd ve stroj\u00edrensk\u00e9m provozu, a pot\u0159ebujete zn\u00e1t hodnotu \u00fahlu? Jak se vlastn\u011b ve stroja\u0159in\u011b m\u011b\u0159\u00ed \u00fahly u trojrozm\u011brn\u00fdch v\u00fdrobk\u016f, pomoc\u00ed pap\u00edrov\u00e9ho \u010di plastov\u00e9ho \u00fahlom\u011bru to p\u0159ece nep\u016fjde? Mus\u00ed se na to j\u00edt jinak.Ve stroj\u00edrenstv\u00ed se pro p\u0159esn\u00e9 m\u011b\u0159en\u00ed \u00fahl\u016f pou\u017e\u00edv\u00e1 sinusov\u00e9 prav\u00edtko. Jde o m\u011b\u0159ic\u00ed metodu nep\u0159\u00edmou, kdy se \u00fahel neode\u010d\u00edt\u00e1 ze stupnice, ale pomoc\u00ed v\u00fdpo\u010dtu sinu \u00fahlu. Sinusov\u00e9 prav\u00edtko sest\u00e1v\u00e1 z m\u011b\u0159ic\u00ed desky, dvou v\u00e1le\u010dk\u016f a podkl\u00e1dac\u00edch m\u011brek. Ve v\u00fdpo\u010dtu figuruje vzd\u00e1lenost v\u00e1le\u010dk\u016f a hodnota v\u00fd\u0161ky podkl\u00e1dan\u00e9 m\u011brky, kde se vypo\u010d\u00edt\u00e1v\u00e1 sinus \u00fahlu alfa, kter\u00fd je roven pod\u00edlu v\u00fd\u0161ky m\u011brek a rozte\u010de v\u00e1le\u010dk\u016f.M\u011b\u0159en\u00ed \u00fahl\u016f t\u00edmto zp\u016fsobem je velmi p\u0159esn\u00e9, ale je zde nutn\u00e9 zn\u00e1t alespo\u0148 z\u00e1kladn\u00ed goniometrick\u00e9 funkce, tedy jde o m\u011b\u0159idla slo\u017eit\u011bj\u0161\u00ed a n\u00e1ro\u010dn\u011bj\u0161\u00ed na ch\u00e1p\u00e1n\u00ed. Proto se tak\u00e9 s t\u011bmito m\u011b\u0159idly seznamuj\u00ed studenti na st\u0159edn\u00edch \u0161kol\u00e1ch anebo a\u017e ve vy\u0161\u0161\u00edch stupn\u00edch z\u00e1kladn\u00edch \u0161kol. Sinusov\u00e1 prav\u00edtka se ve stroj\u00edrenstv\u00ed pou\u017e\u00edvaj\u00ed ji\u017e \u0159adu let a z\u0159ejm\u011b se budou pou\u017e\u00edvat i nad\u00e1le, hod\u00ed se pro ka\u017ed\u00e9ho, kdo zhotovuje ku\u017eelov\u00e9 obrobky, nap\u0159\u00edklad morse ku\u017eely pro up\u00edn\u00e1n\u00ed stroj\u00edrensk\u00fdch n\u00e1stroj\u016f. Uplatn\u00ed se v kusov\u00e9 \u010di s\u00e9riov\u00e9 v\u00fdrob\u011b v r\u016fzn\u00fdch stroj\u00edrensk\u00fdch provozech v\u010detn\u011b \u00fadr\u017eby, z\u00e1me\u010dnick\u00fdch d\u00edlen a dal\u0161\u00edch mal\u00fdch d\u00edln\u00e1ch. Sinusov\u00e9 prav\u00edtko se m\u016f\u017ee hodit i amat\u00e9rsk\u00fdm kutil\u016fm.                                                                                                                                                                                                                                                                                                                                                                                          4\/5 - (2 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Seznamte se se sinusov\u00fdm prav\u00edtkem","item":"https:\/\/www.toxio.cz\/seznamte-se-se-sinusovym-pravitkem\/#breadcrumbitem"}]}]