nischallohani61 nischallohani61
  • 02-02-2020
  • Mathematics
contestada

if a + b + c =180 and cosa = cosb +cosc than prove that cotb *cotc=1/2​

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7419539855
7419539855 7419539855
  • 02-02-2020

can you please translate that to english?

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cvhdhdhd cvhdhdhd
  • 02-02-2020
Sorry I dontunder stand
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