sin(a-p)cosa-cos(p-a)sina=3/5sin(a-p)cosa+cos(a-p))sina=3/5
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sin(a-p)cosa-cos(p-a)sina=3/5sin(a-p)cosa+cos(a-p))sina=3/5
sin(a-p)cosa-cos(p-a)sina=3/5
sin(a-p)cosa+cos(a-p))sina=3/5
sin(a-p)cosa-cos(p-a)sina=3/5sin(a-p)cosa+cos(a-p))sina=3/5
sin(a-p)cosa-cos(p-a)sina=sin(a-p-a)=sin(-p)=3/5,则sinP=-3/5
sin(a-p)cosa-cos(p-a)sina=3/5sin(a-p)cosa+cos(a-p))sina=3/5
化简1.sin(a+p)cosa-cos(a+p)sina 2.sin(a-p)cosp+cos(a-p)sinp
设a是第二象限角,则点p(sin(cosa),cos(cosa))在第几象限,
设a是第二象限角,则点P(sin(cosa),cos(sina))在第几象限
化简1.sin(a+p)cosa-cos(a+p)sina 2.sin(a-p)cosp+cos(a-p)sinp 请问你能帮我解答下
已知sina+cosa=p,求(1)sina*cosa(2)sin^2a-cos^2a(3)sin^3a+-cos^3a(4)sin^4a+-ctg^3a
已知sina+cosa=p,求(1)sina*cosa(2)sin^2a-cos^2a(3)sin^3a+-cos^3a(4)sin^4a+-ctg^3a
若a是第二象限角,则点P(sin(cosa),cos(sina))是第几象限呢?
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化简 sin(a+p)cosp -cos(a+p)sinp
若a是锐角,sin a乘cos a=p,求sin a +cos a的值
cosa=4/5,a,p∈(0,pi/2)cos(a+p)=-4/5,cosp=?
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sina-sinp=-1/2,cosa-cosp=1/3,则cos(a-p)=?
p一撇sin(兀/2+a)怎么等于cosa的