Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleGEOMETRIC DERIVATIONS OF SOME TRIGONOMETRIC FORMULAE.AuthorsMazkewitsch, D.PublicationSchool Science & Mathematics, 1958, Vol 58, Issue 3, p213ISSN0036-6803Publication typeArticleDOI10.1111/j.1949-8594.1958.tb07947.x