三角函数的几道题目1.已知角α的终边上一点的坐标为（sin2π/3,cos2π/3）则角α的最小正值为：A.5π/6 B2π/3 C 5π/3 D11π/62.已知角a和b满足-π/2
网友回答
1,D因为角所在边的斜率=cos(2π/3)/sin(2π/3)=ctg(2π/3)=-根号3/3
所以这条边所对应的倾斜角是5π/6
又因为sin(2π/3)>0,cos(2π/3)所以点在第四象限
因此α=2π-5π/6=11π/6
2.a>-2/TT b所以a-b>-2/TT-2/TT=-4/TT
a所以a-b所以-4/TT