AonZ
  • AonZ
given that t = tan112.5 (a) show that 2t/ 1 - t^2 = 1 (b)Show that tan112.5 = - sqrt2 - 1 I have done part (a)
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Well tan112.5= -2.414213562. And -sqrt2= -1.414213562. Subtracting one from that would give you equal numbers.
AonZ
  • AonZ
well meant to show it using trig identities and stuff :/
anonymous
  • anonymous
Oh.. Well sorry, I can't quite help you there /:

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