| 正弦 | [zhèng xián, ㄓㄥˋ ㄒㄧㄢˊ, 正 弦] sine (of angle), written sin θ #60,081 [Add to Longdo] |
| 余弦 | [yú xián, ㄩˊ ㄒㄧㄢˊ, 余 弦 / 餘 弦] cosine (of angle), written cos θ #79,163 [Add to Longdo] |
| 正切 | [zhèng qiē, ㄓㄥˋ ㄑㄧㄝ, 正 切] tangent (of angle), written tan θ #95,994 [Add to Longdo] |
| 西塔 | [xī tǎ, ㄒㄧ ㄊㄚˇ, 西 塔] theta (Greek letter Θθ) #98,979 [Add to Longdo] |
| 余切 | [yú qiē, ㄩˊ ㄑㄧㄝ, 余 切 / 餘 切] cotangent (of angle), written cot θ or ctg θ #294,235 [Add to Longdo] |
| 正割 | [zhèng gē, ㄓㄥˋ ㄍㄜ, 正 割] secant (of angle), written sec θ #346,404 [Add to Longdo] |
| 余割 | [yú gē, ㄩˊ ㄍㄜ, 余 割 / 餘 割] cosecant (of angle), written cosec θ or csc θ #684,971 [Add to Longdo] |