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In this video,David Lewis, Leaving Cert Maths teacher at The Dublin Academy of Education, goes through the basics of graphing a trigonometric function which features on the Leaving Cert Maths syllabus
Maths Grinds in Dublin and Online - dublinacademy.ie/maths-grinds...
Free Maths Notes - dublinacademy.ie/notes.html
Maths Past Papers & Solutions - crazam.ie