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Sin пи x cos пи/2 x -1. Cos 2 Pi 4 x cos 2 Pi 4 x. Cos(Pi/4-х)^2=cos(x+Pi/4)^2. Cos пи(x-2)/3=1/2.
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Cos arccos x
Y sin cos π x
2sin cos 2 x x π
2sinx 2 cos x
Cos x п 3п
Область значения cos x
Tan 2 x cos 2 x
Y sin x cos 3x
Sin x cos 7x
Неравенство sin x cos x
Sin пи x cos пи/2 x -1. Cos 2 Pi 4 x cos 2 Pi 4 x. Cos(Pi/4-х)^2=cos(x+Pi/4)^2. Cos пи(x-2)/3=1/2. 