so trying to do asin(19,8) gives Error: invalid argument how do i get it to work ? i know it should be 0,339 but can't get webcalc do work.
The range of sine is -1 to +1 so there is no angle whose sine is 19.8.
sin(19.8º) ≈ 0.339 so the question should have been either what is asin(0.339) or what is sin(19.8º).
