As my math professor in college used to say: Degrees are for drawing, radians are for calculating ;-)
On Tue, Nov 27, 2012 at 5:05 PM, <[email protected]> wrote: > > To whom it may concern: > ----------------------- > > In OpenOffice Calc I found incorrect values when using funktion COS(); > > e.g., formula: 2*PI()*R*COS(0°-90°Latitude) /360 = ... R=6376 km > Result shall show difference in km between two meridians (longitudes) > Only COS(0) delivers correct value=1 ==> 111,2821931072 km > > > COS(45)= 0,5253219888 incorrect (correct = 0,707106781) > > Could you be so kind to give an explanation - or what did I do wrong? > > Many thanks in advance for your early reply. > > Kindest regards > > Michael D >
