求值sinπ/8乘cosπ/8过程
8sin(π/32)cos(π/32)cos(π/16)cos(π/8),求值
求值:sin(π/12)+cos(π/12)
不用计算器求值sinπ\8 cosπ\8=sin^2 π\12-cos^2 π\12=化简:(cosx+sinx)^2=
求值cos5π/8*cosπ8
不断求值比较大小sin7/8π与sinπ/16要过程的哦
求值:⑴sin(-19π/3)*cos(19π/6)
sin^a+cos^(π/6+a)+1/2sin(2a+π/6)求值
化简求值sin(-20/3π)cos(43/6π)+sin(35/6π)cos-(17/3π)
求SINπ/64 COSπ/64 COSπ/32 COSπ/16 COSπ/8
sinπ/10乘cosπ/5的值
已知函数f(x)=1-2sin平方(x+π/8)+2sin(x+π/8)点乘cos(x+π/8)
(cosπ/8+sinπ/8)(cos^3π/8-sin^3π/8)