sin(-π/4)求值

来源：学生作业帮助网编辑：六六作业网时间：2024/07/11 16:08:08

sin(-π/4)求值sin(-π/4)求值sin(-π/4)求值解sin(29/6π)=sin(4π+5π/6)=sin(5π/6)=sin(π-π/6)=sin(π/6)=1/2cos(31/4π

sin(-π/4)求值
sin(-π/4)求值

sin(-π/4)求值

解
sin(29/6π)
=sin(4π+5π/6)
=sin(5π/6)
=sin(π-π/6)
=sin(π/6)
=1/2
cos(31/4π)
=cos(8π-π/4)
=cos(-π/4)
=cosπ/4
=√2/2
tan(-1560)
=-tan(1560)
=-tan(180×9-60)
=-tan(-60)
=tan(60)
=√3

sin(-π/4)求值 sin(-4分之π)求值 sin 11π/4 求值 sin(-7π／6)求值求值sin(-17π/3) 化简求值sin^4θ+sin^4(π/3-θ)+sin^4(π/3+θ) sin^4θ+sin^4(π/3-θ)+sin^4(π/3+θ)化简求值求值:sin(26π/3)+cos(-17π/4)= 求值：sin(π/12)+cos(π/12) 求值：sin[1/2arctan(-4/3)] 求值sin^4(π/8)+cos^4(π/8) 答对有分`求值sin^4(π/8)+cos^4(π/8)```过程 sin(π+π/6)-cos(π+π/4)cos(-π/2)+1求值求值：sin(π/4)cos(19π/6)tan(21π/4)急! 求值:sin(-31π/6)-cos(-10π/3)-sin11π/4 sin^4 (5π/8）-cos^4 （5π/8）求值求值sin^4(π/8)+cos^4(π/8) 答对有分` 求值：3^(log3 (25) )+(-C(5,4)^(log2 1)+16^(log4(2sin(π/2))= 三角函数sinα求值.