EMS Proceedings and Notes

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A special case of the dissection of any two triangles into mutually similar pairs of triangles | Vol XVIII (1899) 28-29 |

Geometrical Proofs of the Trigonometrical Ratios of 2θ and 3θ
| Vol 38 (1919) Notes |

Geometrical Proof of tan ½(B - C) / tan ½(B + C) = (b - c) / (b + c)
| Vol 38 (1919) Notes |

Trigonometrical ratios of the half angles of a triangle | Vol 39 (1920) Notes |

Trigonometrical Ratios of (A ± B)
| Vol 40 (1921) 60-61 |

Theorem regarding a regular polygon and a circle cutting its sides, with corollary and application to trigonometry | Notes: 22 (1924) |

MH/JOC/EFR November 2009