En Cosinus

<div class="betydningsskiller inline-eske" style="box-sizing: inherit; display: inline; text-transform: uppercase; font-size: 0.8rem; color: rgb(165, 66, 66); font-weight: 600; font-family: &quot;Open Sans&quot;, Arial, sans-serif;">MATEMATIKK</div><div class="inline-eske" style="box-sizing: inherit; display: inline; font-family: &quot;Open Sans&quot;, Arial, sans-serif;">&nbsp;<a href="https://www.naob.no/s%C3%B8k?elementRefid=53118133" style="box-sizing: inherit; background-color: transparent; color: rgb(32, 57, 157);">trigonometrisk funksjon</a>, for en rettvinklet trekant definert som forholdet mellom vinkelens nærmestliggende&nbsp;<a href="https://www.naob.no/s%C3%B8k?elementRefid=52945452" style="box-sizing: inherit; background-color: transparent; color: rgb(32, 57, 157);">katet</a> og<a href="https://www.naob.no/s%C3%B8k?elementRefid=52927629" style="box-sizing: inherit; background-color: transparent; color: rgb(32, 57, 157);">hypotenusen</a></div>