versed sine

名词 n.
中文释义

英文释义

名词 n.
  1. The trigonometric function 1 − cos(x).
    — For the divisions, to be laid on this line, are the differences between the logarithm versed sine of 180°, and the logarithm versed sines of the successive arcs.

词形变化

versed sines plural

词源

From New Latin sinus versus (“flipped sine”); the sine function being sometimes called sinus rectus.
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