y=sin^2x+sinxcoswx+cos^2x 化简
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y=sin^2x+sinxcoswx+cos^2x 化简
y=sin^2x+sinxcoswx+cos^2x 化简
y=sin^2x+sinxcoswx+cos^2x 化简
y=1+sinxcoswx
=1+1/2[sin(x+wx)+sin(x-wx)]
你确定有w么?hou'yi'b后一步用到了积化和差的公式
看不懂
y=sin^2x+sinxcoswx+cos^2x 化简
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