[Python-ideas] Trigonometry in degrees

Greg Ewing greg.ewing at canterbury.ac.nz
Fri Jun 8 02:45:15 EDT 2018


Steven D'Aprano wrote:
> Even 
> old-school scientific calcuators without the fancy CAS symbolic maths 
> are capable of having cos(90) return zero in degree mode.

FWIW, my Casio fx-100 (over 30 years old) produces exactly 1 for
both sin(90°) and sin(pi/2) for its version of pi.

-- 
Greg


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