已知α=2000°,(1)把a写成2kπ+β(k∈z,β∈[0,2π))的形式

2025-06-27 23:32:54
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回答1:

解:1°=π/180,2000°=2000π/180=100π/9,于是
  ⑴α=100π/9=2*5π+10π/9
  ⑵θ=10π/9+4π=46π/9