Photos ВЫЧИСЛИТЬ COS Π

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Вычислить cos π. CTG. Cos3π/4. Cos 2π/3. Cos(3π/2-a) +cos(π+a) /2sin(a-π/2) cos(-a) +1.
CTG. Cos3π/4. Cos 2π/3. Cos(3π/2-a) +cos(π+a) /2sin(a-π/2) cos(-a) +1.

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