6sin²x+4sinxcosx=1
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6sin^2x+4sinx×cosx=cos^2x+sin^2x5sin^2x+4sinx×cosx=cos^2x5tg^2x+4tgx-1=0tgx=y5y^2+4y-1=0y1=-1y2=1/5tgx=-1x1=arctg (-1)+кПtgx=1/5x2=arctg1/5+кП