cos(-16π/3)+sin(-16π/3)的值为?

求SINπ/64 COSπ/64 COSπ/32 COSπ/16 COSπ/8 比较大小(1)sin(-π/16)与sin(-π/5) (2)cos(-33/5π)与cos(-13/3π) 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 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 sin(π/16)^2-cos(π/16)^2 怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3cosπ/4cosπ/3-sinπ/4sinπ/3 sin（-19π/6）=；sin（-16π/3）=；cos（-79π/6）=；tan（-26π/3）=；sin（15π/4）=；cos（-60°）-sin（-210°）=? sin（-19π/6）= sin（-16π/3）= cos（-79π/6）= 根号2sinπ/32*cosπ/32*cosπ/16*cosπ/18 怎么化简 cos(-16π/3)+sin(-16π/3)的值为? 求下列三角函数值cos225°sin11/3πsin(-16/3π)cos(-2040°) (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. 利用和差角公式化简 (2)sin(π/3+α)+sin(π/3-α)(2)sin(π/3+α)+sin(π/3-α)(3)cos(π/4+α)-cos(π/4-α)(4)cos(60°+α)+cos(60°-α)(5)sin(α-β)cosβ+cos(α-β)sinβ(6)cos(α+β)cosβ+sin(α+β)sinβ sin cos之间怎么转换?sin(π/3-2X）等于cos多少? cot(π+θ)=2,则(3sinθ-cosθ)/(sinθ+cosθ)=?