Images НАЙДИТЕ ЗНАЧЕНИЕ COS

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Найдите значение cos. 22 Sin2 9 cos2 9 /cos18. 22 Sin9+cos9 cos18. 22/Cos34+cos124. -22/Cos^2 34.
22 Sin2 9 cos2 9 /cos18. 22 Sin9+cos9 cos18. 22/Cos34+cos124. -22/Cos^2 34.

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