OllieE
OllieE OllieE
  • 02-08-2018
  • Mathematics
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Please help, trigonometry is hard for me

Please help trigonometry is hard for me class=

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Аноним Аноним
  • 02-08-2018

Because the cos theta < 0 then theta must be an obtuse angle

so a^2 + b^2 < a^2

C

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