知识问答
最佳答案:-17π/3=-6π+π/3sin(-17π/3)=sin(-6π+π/3)=sin(π/3)=√3/2cos(-17π/3)=cos(π/3)=1/2tan(
最佳答案:sin(2kπ+α)=sinα,cos(2kπ+α)=cosπ,tan(2kπ+α)=tanα,k∈Zsin(π+α)=-snα,cos(π+α)=-cosα,
最佳答案:#includevoid main(){x09float a;x09int b;x09scanf("%f",&a);x09float delta = a - (