Sinb*cosb+2 / 5cos^2b+1 при tgb=2
sinb*cosb-3 / 6cos^2b-sin^2b при tgb= -2
2sinb*cosb+3 / 4cos^2b + sin^2b при tgb= -4
cos^2b+2 / cos^2b + 3sinb*cosb при tgb=3
143
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