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=3/5sin(a-p)cosa-cos(p-a)sina=3/5sin(a-p)cosa
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
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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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