selenarose56751 selenarose56751
  • 04-01-2018
  • Mathematics
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How to find cot of 60 given sin and tan of 30?

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Аноним Аноним
  • 04-01-2018
use tan 2x  = 2tan x / (1 - tan^2x)

so tan 60  =  2 tan 30 / 1 - tan^2 30 =   1.7321

cot 60  = 1 / 1.7321 = 0.5774   Answer
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