模具配模常用三角函数公式表

黄石光明模具 2022-04-30 07:43 编辑:纪露 59阅读

(sin x)∧2+(cos x)∧2=1,sin 2x=2sin xcos x,cos 2x=1-2(sin x)∧2=2(cos x)∧2-1,(sec x)∧2+(cos x)∧2=1,(csc x)∧2+(sin x)∧2=1,(sec x)∧2-(tan x)∧2=1,(csc x)∧2-(cot x)∧2=1,sin (x+y)=sin xcos y+cos xsin y,cos(x+y)=cos xcos y-sin xsin y.