anonymous
  • anonymous
cos theta/2- cos theta=1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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goformit100
  • goformit100
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anonymous
  • anonymous
|dw:1378259381110:dw|
anonymous
  • anonymous
do you need to know an identity for this problem

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anonymous
  • anonymous
Let theta/2= x
anonymous
  • anonymous
how can you write it on the board please
anonymous
  • anonymous
wait how did you get cos 2x
anonymous
  • anonymous
oh I understand
anonymous
  • anonymous
wait did you delete the explanation
anonymous
  • anonymous
|dw:1378259660246:dw|
anonymous
  • anonymous
|dw:1378259736816:dw|
anonymous
  • anonymous
Yeah i deleted that because i decided to write it on board instead.
anonymous
  • anonymous
where did you get 2 cos^2 x-1
anonymous
  • anonymous
is that an identity
anonymous
  • anonymous
yes .
anonymous
  • anonymous
ok
anonymous
  • anonymous
okay thanks I understand now

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