cos5/6π=?sin5/6π=?
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cos5/6π=?sin5/6π=?
cos5/6π=?sin5/6π=?
cos5/6π=?sin5/6π=?
cos5/6π=cos(π-π/6)=-cos(π/6)=-√3/2
sin5/6π=sin(π-π/6)=sin(π/6)=1/2
cos5/6π=?sin5/6π=?
sin5/3π= ,cos5/3π
(sin5π/12-sinπ/12)(cos5π/12+cosπ/12)=?
sin5π和cos5π等于多少
sin5π/6=1/2?
a=sin5π/7,b=cos5π/7,c=tan5π/7abc那个最大,那个最小?
a=sin5π/7,b=cos5π/7,c=tan5π/7abc谁最大谁最小?
(1)根号2cos3x+根号6sin3x; (2)cos5π/12-根号3sin5π/12
sin(a) -cos(a)=根号2/2 cos5° +根号6/2 sin5° 的a的最小正角是
SIN5/6π
cos5π/12-根3sin5π/12过程
sin15°/sin5°-cos15°/cos5°=
cos5π等于=
(sina5π/12+cos5π/12)(sin5π/12-cos5π/12)
已知角a的终边上一点的坐标为(sin5π/6,cos5π/6),则角a的最小值为----?答案是5π/3
已知角α终边上一点坐标为(sin5π/6,cos5π/6)求sinα和cosα的值
已知角α终边上一点坐标为(sin5π/6,cos5π/6)求sinα和cosα的值
sin5/6π等于多少?