
sin0=0,
sin15=(√6-√2)/4 ,
sin30=1/2,
sin45=√2/2,
sin60=√3/2,
sin75=(√6+√2)/2 ,
sin90=1,
sin105=√2/2*(√3/2+1/2)
sin120=√3/2
sin135=√2/2
sin150=1/2
sin165=(√6-√2)/4
sin180=0
sin270=-1
sin360=0
短边=tan(25°)*6.88约等于3.21
sin0° =0cos0° =1tan0°=0 sin30°=1/2 cos30°=√3/2tan30°=√3/3 sin45°=√2/2 cos45°=√2/2tan45°=1 sin60°=√3/2 cos60°=1/2tan60°=√3 sin90°=1cos90°=0