cosπ/15 cos2π/15 cos3π/15 cos4π/15 cos5π/15 cos6π/15 cos7π/15他们都相乘 求等于多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/05 03:58:07
xUN@~TQ,$xġʅ6ih!hB(RG!Y'^^gHAꥑ7;og߮UPХ4'RJH'~nzhX[T+Nz>Io+ҦsoI>hQ8a6%]Raй@%|ضg`t 6000~r@N}Gެ:qS"7,ܑ{||;JSAǦ -&}5}~՛,LYY~m|LW"yh/30=4H0ې+-ttp恸?I&!]|yrߑj,} =C5Sd+O#cW6D"Ъ _ï`Y4R#|[Xre<щvNS
`'#F[s;PX}W{;$Gk硐sOkhAv?AaM_M\bz
9N^ S
求COSπ/5*COS2π/5
cosπ/5×cos2π/5=
COSπ/5乘以COS2π/5
cosπ/5×cos2π/5
cosπ/5cos2π/5
cosπ/5cos2π/5=?
计算:cosπ/15×cos2π/15×cos4π/15×cos8π/15
cosπ/5 - cos2π/5 怎样变成 cosπ/5 + cos2π/5rt
化简cos2α+cos2(π/3+α)+cos2(π/3-α)化简cos²α+cos²(π/3+α)+cos²(π/3-α)
sinπ.cosπ.sin2π.cos2π分别是多少
cosπ/9*cos2π/9*cos4π/9=?
求值:cosπ/7*cos2π/7*cos3π/7
cosπ/7cos2π/7cos3π/7=?
cosπ/7cos2/7πcos4/7π=
cosπ/9cos2π/9cos23π/9
(cosπ/5)(cos2π/5)的值等于
cosπ/5·cos2π/5等于多少?
cosπ/5*cos2π/5的值等于