amitaryan706 amitaryan706
  • 26-02-2017
  • Mathematics
contestada

tan20+tan40+tan60.......+tan180=?

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youngrainbow youngrainbow
  • 26-02-2017
the answer is 0. 
assuming by the dots that it includes tan80 +tan100 +tan120 +tan140 +tan160 in the equation. 
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