- ‘If its argument is an array, the sinh function will be applied to each element and the result returned as an array.’
- ‘The sinh, cosh, and tanh subroutines compute the hyperbolic trigonometric functions of their parameters.’
- ‘Here we note that, using hyperbolic trig. functions, it is also cosh/sinh or 1/tanh.’
Late 19th century: from sin(e) + h(yperbolic).
We take a look at several popular, though confusing, punctuation marks.