What does the word trigonometry mean?

Usage examples for trigonometry

  1. I told them it was easy in each city to compute the exact turning, by corners and circles- By spherical trigonometry, certainly, said Mendelssohn pleasantly. – Dreamers of the Ghetto by I. Zangwill
  2. But, all the same, I took with a great deal of thankfulness the dressing- down I had got from my father for being late for home lessons on a trigonometry night. – The Dew of Their Youth by S. R. Crockett