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    тригонометрия

    ЕленаКМ
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      Cos(π+t)
      - Cos t
      Sin (3π/2+t)
      - Cos t
      Sin(π/2 +t)
      Cos t
      sin510°
      0,5
      Cos(2π-t) - Sin (3π/2+t)
      0
      Sin²(π/2 +t) + Sin²(π-t)
      2Cos² t
      ctg(-600°)
      - √3/3
      cos 330° + sin 120°
      √3
      sin (11π/6)
      -0,5
      cos(5π/3)
      0,5
      sin225° + cos330°
      (√3-√2)/2
      cos480°
      -0,5
      Cos²(π+t) + Sin²(π-t)
      1
      √2/2 · sin (3π/2 -π/4)
      -0,5
      Sin (2π-t) - Cos(3π/2+t)+1
      -2Sint+1