sin(-1574)
=sin(-1800+226)
=sin226
=sin(180+46)
=-sin46
约等于0.7193
(sin-2160度52秒)
=sin(-2160度-52秒)
=sin(-52秒)
=-sin52秒
约等于0.00025
sin(-1574)
=sin(-1800+226)
=sin226
=sin(180+46)
=-sin46
约等于0.7193
(sin-2160度52秒)
=sin(-2160度-52秒)
=sin(-52秒)
=-sin52秒
约等于0.00025