Images B COS X C

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B cos x c. Cos 1/2. Cos π. Cos^2(π-x)-sin(π/2-x)=0. Cos2x 0 на окружности.
Cos 1/2. Cos π. Cos^2(π-x)-sin(π/2-x)=0. Cos2x 0 на окружности.

See also