8sin(π/32)cos(π/32)cos(π/16)cos(π/8),求值

求SINπ/64 COSπ/64 COSπ/32 COSπ/16 COSπ/8 8sin(π/32)cos(π/32)cos(π/16)cos(π/8),求值 求SINπ/64 COSπ/64 COSπ/32 COSπ/16 COSπ/8!急救急救 sinπ/8×cosπ/8 sinπ/8×cosπ/8 sinπ/8*cosπ/8 sinπ/8cosπ/8=( ) 根号2sinπ/32*cosπ/32*cosπ/16*cosπ/18 怎么化简 (cosπ/8+sinπ/8)（cos^3π/8-sin^3π/8） (cosπ/8+sinπ/8)（cos^3π/8-sin^3π/8）. (cos π/8+ sin π/8 ) (cos^3 π/8+sin^3 π/8 )的值. cos 5π/8 cos π/8 + sin 5π/8 sin π/8= cos(π/32)*cos(π/16)*cos(π/8)= 设f(sinα+cosα)=sinα×cosα,则f(sinπ∕6)的值为A-3/8B1/8C-1/8D√3/8√是根号 化简sin(α-5π)/cos(3π-α)×cos(π/2-α)/sin(α-3π)×cos(8π-α)/sin(-α-4π) cos^6(π/8)-sin^6(π/8)=求值,[cos^2(π/8)-sin^2(π/8)][cos^4(π/8)+sin^4(π/8)+cos^2(π/8)sin^2(π/8)]=cos(π/4)[1-cos^2(π/8)sin^2(π/8)]=cos(π/4)[1-[sin^2(π/4)]/4]==7√2/16 计算sin²π/8-cos²π/8= cos平方π/8-sin平方π/8,