计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 04:09:52
![计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)](/uploads/image/z/8800949-29-9.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9Acos225%C2%B0%2Bsin%EF%BC%88-7%E6%B4%BE%2F3%EF%BC%89%2Bcos%EF%BC%88-2040%C2%B0%EF%BC%89%2Bsin%EF%BC%88-16%E6%B4%BE%2F3%EF%BC%89)
xSMn1JRQbh
$V]q @ˈE/;tr$mP "uefZ^7EWˋqWE PAo3e0uOy&%ͪtU5'GyNQ槃z^'u'6aSnжc}_)Jᥦ|
Q g(wh(1 A18R0YQr0b(ɛ.Y y2{Q^hPCfމvިR%Egg6?RhS4p8;
*phX:mLEQDù7&:'R#3h*WJ&VM|O%+-eRߞVHLmYki"NB$юTIGt$KcwFOn䁧(6f`"Q
计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)
计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)
计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)
cos255°+sin(-7π/3)+cos(-2040°)+sin(-16π/3)
=cos(180°+45°)+sin(-2π-π/3)+cos(-2160°+120°)+sin(-6π+2π/3)
=-cos45°-sin(π/3)+cos120°+sin(2π/3)
=-√2/2-√3/2-1/2+√3/2
=-√2/2-1/2
=-(√2+1)/2
计算:cos225°+sin(-7派/3)+cos(-2040°)+sin(-16派/3)
sin(-60°)+cos225°+tan135°
sin(-60°)+cos225°+tan135°
求下列三角函数值cos225°sin11/3πsin(-16/3π)cos(-2040°)
cos225+tan240+sin(-60)
己知sin(x+派)=-1/2计算sin(5派-x)-cos(x-3派/2)(2)sin(派/2+x)*tan(派/2+x)
sin²派/3+cos四次方3派/2-tan²派/3 计算
cos225°+tan240°+sin(-60°)+tan(-420°)=
求cos225°+tan960°+sin(-1140°)+cot(-570°)之值
用诱导公式计算 sin(-派-a)=?cos(2派-a) tan(a-派) cos(3派-a)
已知sin(派+a)=-1/2,计算 (1)sin(5派-a) (2)cos(a-3派/2)
2cos派/2-tan派/4+3/4tan²派/6-sin派/6+cos²派/6+sin3派/2 计算
cos225°等于多少!急用!
已知sin(派+a)= -1/2.计算tan(a-7派)
已知sin(派+a)=-1/3,计算cos(a-3派/2)
曲线怎么计算负派/2到派/2,(sin^3x+1)dx
已知sin a+cos a=-(1/3),计算sin(派+a)+cos(派-a)的值
化简sin(13派/6)+cos(7派/3)-tan(49派/4)