做模具-三角函数计算方法及快速查询表.doc

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1、做模具:三角函数计算方法及快速查询表角函数的关系(正弦)Sinθ=对边A/斜边C(余弦)Cosθ=邻边B/斜边C(正切)Tanθ=对边A/邻边B对边A=斜边C*Sinθ对边A=邻边B*Tanθ邻边B=斜边C*Cosθ邻边B=对边A/Tanθ斜边C=对边A/Sinθ斜边C=邻边B/Cosθ例题：已知斜边C=20,角度θ=35度求对边A及邻边B　　　对边A=斜边C*Sinθ=20*Sin(35)=20*0.573576=11.471　　　邻边B=斜边C*Cosθ=20*Cos(35)=20*0.81915=16.383一般车床锥度与三角函数的关系　锥度比T=(大径D-小径

2、d)/(长度L)Tanθ=(大径D-小径d)/(2*长度L)D=d+2*L*Tanθd=D-2*L*Tanθθ=Tan-((D-d)/2L)这里为你提供了sin,cos,tan不同角度的表值，精确度也很高了，相信对你有用sin1=0.sin2=0.sin3=0. sin4=0.41253sin5=0.sin6=0. sin7=0.sin8=0.sin9=0. sin10=0.sin11=0.65448sin12=0. sin13=0.sin14=0.sin15=0. sin16=0.sin17=0.27367sin18=0.49474 sin19=0.71567sin

3、20=0.56687sin21=0. sin22=0.5912sin23=0.92737sin24=0. sin25=0.sin26=0.90774sin27=0. sin28=0.58908sin29=0.sin30=0. sin31=0.00542sin32=0.32049sin33=0.5027 sin34=0.07468sin35=0.1046sin36=0.24731 sin37=0.20483sin38=0.56583sin39=0.98375 sin40=0.65392sin41=0.05073sin42=0.88582 sin43=0.24985sin

4、44=0.89972sin45=0.65475 sin46=0.86511sin47=0.91705sin48=0.73941 sin49=0.27719sin50=0.8978sin51=0.69708 sin52=0.67219sin53=0.72928sin54=0.49474 sin55=0.89918sin56=0.50417sin57=0.54239 sin58=0.6426sin59=0.21122sin60=0.44386 sin61=0.93957sin62=0.89269sin63=0.83678 sin64=0.9167sin65=0.66499

5、sin66=0.26009 sin67=0.24404sin68=0.67873sin69=0.72017 sin70=0.59083sin71=0.93167sin72=0.51535 sin73=0.30354sin74=0.83189sin75=0.90683 sin76=0.59965sin77=0.52352sin78=0.38057 sin79=0.7664sin80=0.2208sin81=0.51378 sin82=0.15704sin83=0.1322sin84=0.82733 sin85=0.17455sin86=0.98242sin87=0.45

6、738 sin88=0.90958sin89=0.63913 sin90=1 cos1=0.63913cos2=0.90958cos3=0.45738 cos4=0.98242cos5=0.17455cos6=0.82733 cos7=0.1322cos8=0.15704cos9=0.51378 cos10=0.2208cos11=0.7664cos12=0.38057 cos13=0.52352cos14=0.59965cos15=0.90683 cos16=0.83189cos17=0.30355cos18=0.51535 cos19=0.93168cos20=0

7、.59084cos21=0.72017 cos22=0.67874cos23=0.24404cos24=0.26009 cos25=0.66499cos26=0.9167cos27=0.83679 cos28=0.8927cos29=0.93957cos30=0.44387 cos31=0.21123cos32=0.6426cos33=0.5424 cos34=0.50417cos35=0.89918cos36=0.49474 cos37=0.72928cos38=0.67219cos39=0.69709 cos40=0.8978cos41=0.27