A) 20sin(x)+21sin^2(x)+21cos^2(x)=20 б) sin(-)+sin=-1
в) sin^2(10x)=1/4
г) cos^2(x)=20cos(x)
д) cos^2(x)+19cos(x)=20
е) cos^2(x)+58sin(x)+119=0
ж) 20sin(x)=cos(x)
в) sin^2(10x)=1/4
г) cos^2(x)=20cos(x)
д) cos^2(x)+19cos(x)=20
е) cos^2(x)+58sin(x)+119=0
ж) 20sin(x)=cos(x)
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