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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: 1.cotx-1=cos2x/1+tanx +sin^2x-1/2.sin2x

Toán Lớp 11: 1.cotx-1=cos2x/1+tanx +sin^2x-1/2.sin2x

Comments ( 2 )

  1. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-11-1-cot-1-cos2-1-tan-sin-2-1-2-sin2

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222-9+11+12:2*14+14 = ? ( )

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