Τριγωνομετρικός αριθμός Συνεφαπτομένης

Permanent link to this article: http://pervolischool.edu.gr/mathematics/%cf%84%cf%81%ce%b9%ce%b3%cf%89%ce%bd%ce%bf%ce%bc%ce%b5%cf%84%cf%81%ce%af%ce%b1/%cf%84%cf%81%ce%b9%ce%b3%cf%89%ce%bd%ce%bf%ce%bc%ce%b5%cf%84%cf%81%ce%b9%ce%ba%cf%8c%cf%82-%ce%b1%cf%81%ce%b9%ce%b8%ce%bc%cf%8c%cf%82-%cf%83%cf%85%ce%bd%ce%b5%cf%86%ce%b1%cf%80%cf%84%ce%bf%ce%bc%ce%ad/