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Photos 2SIN PI X COS
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Sin Pi/2 - x = cos x. 2sin(Pi/2-x) cos(Pi/2+x). Cos Pi/2-x.
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See also
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 Pi/2 - x = cos x. 2sin(Pi/2-x) cos(Pi/2+x). Cos Pi/2-x. 