#lang scribble/manual @(require (for-label racket)) @title{(tan-h a)} Tangent. @racketblock[ (let* ((a (line kr (- pi) pi 1 remove-synth)) (b (sub (fdiv (tan-h a) (/ pi 2)) 1)) (f (mul-add b 900 1600))) (audition (out 0 (mul (sin-osc ar f 0) 0.1)))) ]