ДАЮ 99Б
1)sin2a/cos^a*tga
2)-2cosa+2sina^a/1-cosa
3)1-cos(2пи-2a)/1-cos^a
4)cos^2a/1-cos^2a*tg^2a
1)sin2a/cos^a*tga
2)-2cosa+2sina^a/1-cosa
3)1-cos(2пи-2a)/1-cos^a
4)cos^2a/1-cos^2a*tg^2a
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