tangent line

American  

noun

1. tangent.

---

Example Sentences

A function is differentiable if at every point, you can find a tangent line, a straight line that approximates the function’s path near that point.

From Scientific American

This done, draw the line d e f tangent to the pitch line at the middle of the tooth, and mark off the half thickness of the tooth, as e, d, either on the tangent line or the pitch line.

From Project Gutenberg

Then place the graduated edge of the odontograph at d, and in such a position that the number and division found as already stated shall come precisely on the tangent line at d, and at the same time so set the curved edge h f c so that it shall be tangent to the tangent line, that is to say, the curved edge c h must just meet the tangent line at some one point, as at f in the figure.

From Project Gutenberg

For the flanks of the teeth setting numbers are obtained from a separate table, and the instrument is turned upside down, and the tangent line d f, Fig.

From Project Gutenberg

In the ratio column find this number, and look along that line, and in the column at the head of which is the number of teeth contained in the wheel to be marked, is a number termed the tabular value, which, multiplied by the arc pitch of the teeth, will give the number on the graduated edge by which to set the instrument to the tangent line.

From Project Gutenberg