2013/9/20 Adrian May <adrian.alexander.may@gmail.com>
Apparently not. Those are 1/sin and 1/cos. I want to supply a ratio and get an angle.

Hello Adrian,
I wasn't sure my trigonometry was still good so I fired up ghci and here's what I got:

    Prelude> let angle = pi / 2 in asin (sin (angle)) == angle
    True

Does it make sense?

Regards,
Nadir