TY - JOUR
AU - Edmundas Mazėtis
AU - Grigorijus Melničenko
PY - 2013/12/20
Y2 - 2021/06/22
TI - A rational sine and cosine of the angles of a triangle
JF - Lietuvos matematikos rinkinys
JA - LMR
VL - 54
IS - B
SE - Articles
DO - 10.15388/LMR.B.2013.28
UR - https://www.journals.vu.lt/LMR/article/view/17182
AB - The article deals with triangles whose sines and cosines of the angles are the rational numbers. We prove that these triangles are similar to Pythagorean or Heronian triangles, and vice versa.
ER -