Details

Autor(en) / Beteiligte

• Sathish Indika, S H
• Leemis, Lawrence M

Titel

Exact Expressions for Trigonometric Functions

Ist Teil von

• The College mathematics journal, 2024-01, Vol.55 (1), p.40-45

Ort / Verlag

Washington: Taylor & Francis Ltd

Erscheinungsjahr

2024

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• SummarySolving polynomial equations and trigonometry are typically taught in separate modules or even separate classes. The derivation of a one-third angle formula gives students the opportunity to tie these two topics together. An algorithm for finding the cosine of one-third of a prescribed angle is based on Cardano’s formula. In addition, we show how this algorithm can be combined with half, double, and triple angle formulas to give exact expressions for trigonometric functions written in terms of radicals for an infinite number of angles between 0 and π/2.