Упростить ((1-cos2a)^2/(2sin^2a))+2cos^2a
((1-cos 2tg )^2/(2sin^2tg ))+2cos ^2tg = (1.41614683655^2/(2sin^2tg ))+2cos ^2tg = (1.41614683655^2/200)+2cos ^2tg = 0.0100273593134+2cos ^2tg = 210.010027359
(2sin^2a)^2/2sin^2a+2cos^2a=2sin^2a+2cos^2a=2(sin^2a+cos^2a)=2