qwaffe 2020-02-08 02:50
The manual says -(PI/2)<ACOS(x)<(PI/2), but I think it should be 0<ACOS(x)<PI, or better yet, 0≤ACOS(x)≤PI. I think "≤" (instead of "<") must be used for the description of ASIN() as well.
Timo 2020-02-08 10:16
Hm, I think I just copied it from an older BASIC manual, but I never tried the actual implementations. I will check it.