π/6

π/6 π/6 π/6 Sin(π+π/6)Sin(2π+π/6)Sin(3π+π/6).Sin(2008π+π/6)求值 设-π/6 计算：sinπ/6+cosπ/6+tanπ/6+cotπ/6 当π/6 已知π/6 已知π/6 已知π/6 sin 11π/6 已知π/6 COS13/6π 已知π/6 已知π比6 已知π/6 6π约等于 sin25π/6等于?