计算cosπ/12*sinπ/12
计算cosπ/12*sinπ/12
计算:sinπ12
cos*π/12—sin*π/12
求值:sin(π/12)+cos(π/12)
(cosπ/12-sinπ/12)*(COSπ/12+sinπ/12)等于
计算:cos(π/8)*sin(π/8)=?
计算sin(π-2)-cos(π/7-2)的值
cos sin π √
sinπ/24*cosπ/24*sinπ/12=—— 答案是这么写的:1/2(2sinπ/24*cosπ/24)cosπ
已知α=7/12π,那么cosα√(1-sinα)/(1+sinα)+sinα√(1-cosα)/(1-cosα)=
sin,cos怎么计算
计算机计算sin cos