sujandangal69 sujandangal69
  • 22-08-2019
  • Mathematics
contestada

1-cosA+cosB-cos(A+B)/1+cosA-cosB-cos(A+B) =tanA/2cotB/2​

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mariana7570
mariana7570 mariana7570
  • 22-08-2019
kalapaoakaaj aiapaplala aiwieieiie
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