Colon

三角関数精度

2018/05/11 (Fri) 00:01:20
例を挙げますと、いずれもDBL#モードで、

[Deg]
sin 180=1.22514845490862×10^-16
sin 360=-2.45029690981724×10^-16

cos 90=6.1257422845431×10^-17
cos 270=-1.83772268236293×10^-16

[Rad]
sin π=1.22514845490862×10^-16
sin 2π=-2.45029690981724×10^-16

cos π/2=6.1257422845431×10^-17
cos 3π/2=-1.83772268236293×10^-16

[Gra]
sin 200=-3.21574364359201×10^-16
sin 400=6.431487287184012×10^-16

cos 100=-1.607871821796×10^-16
cos 300=-1.83772268236293×10^-16
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