sin^2(pai/3-x)+sin^2(pai/6+x)=如题
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sin^2(pai/3-x)+sin^2(pai/6+x)=如题
sin^2(pai/3-x)+sin^2(pai/6+x)=
如题
sin^2(pai/3-x)+sin^2(pai/6+x)=如题
sin^2(π/3-x)+sin^2(π/6+x)
=cos^2[π/2-(π/3-x)]+sin^2(π/6+x)
=cos^2(π/6+x)+sin^2(π/6+x)
=1
x属于(pai/4,pai),sin(x+pai/4)=√2/3,sin(x-pai/4)=
化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x)求单调减区间。
化简:根号3 sin(2x+pai/3)+ 2sin^2(x+pai/6)
2sin(3x-3pai/4)和2sin(3x+pai/4)相等吗
sin^2(pai/3-x)+sin^2(pai/6+x)=如题
已知sin(3pai-x)=-2sin(pai/2+x),则sinxcosx等于
化简:sin(2pai-a)cos(pai a)/cos(pai-a)sin(3pai-a)
[tan(pai-a)cos(2pai-a)sin(-a+3pai/2)]/[cos(-a-pai)sin(-pai-a)]=
sin(a-3pai)cos(pai-a) / cos(pai/2 - a)cos(pai+a)sin(pai/2 + a)
函数Y=SIN(2X+PAI /3)+SIN(2X-PAI /3)取得最小值是的X应去值是?
sin(-2x+pai/3)的单调递减区间
解sinx=2sin(pai/3-x)
[sin^2(a+pai)cos(pai+a)cos(-a-2pai)]/[tan(pai+a)sin^3(pai/2+a)sin(-a-2pai)]=
cos (a+4pai)cos ^2(a+pai)sin^2(a+3pai)/ sin(a-4pai)sin(5pai+a)cos^2(-a-pai)
函数y=2sin(pai/6-2x)(x∈[0,pai]为增函数的区间是A、[0,pai/3] B、[pai/12,7pai/12] C、[pai/3,5pai/6]D、[5pai/6,pai]
cosx -(根号3)*sinx这道题的答案是-2sin(x +pai /3)还是2sin(x +pai /3)
y=√3sin(2x-pai/6)+2sin^2(x-pai/12)的最小正周期
函数y=12sin(2x-pai/6)-5sin(2x+pai/3)的最大值是?怎样算?