anonymous
  • anonymous
What is the exact value of: tan^-1(tan(4pi/5)) I put 4pi/5 as the answer, why is that wrong?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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bahrom7893
  • bahrom7893
should be correct. maybe u made a typo
whpalmer4
  • whpalmer4
Perhaps they are looking for the principal value...
jim_thompson5910
  • jim_thompson5910
It has to do with the fact that the range of the arctan function is -pi/2 <= y <= pi/2

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