angela210793
  • angela210793
Help please.... x+y=TT Find (1-cosX)/(1+cosy)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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amistre64
  • amistre64
is that a pi symbol perhaps?
anonymous
  • anonymous
ohhhhhhhhhhhhhhhh
anonymous
  • anonymous
i was looking for some sort of double angle formula.

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angela210793
  • angela210793
Hmmm...smart :P:P:P:P:P YES IT IS!!! :)
angela210793
  • angela210793
Oops sorry ^_^
amistre64
  • amistre64
1-cos(x) ------------ then 1 + cos(pi - x)
anonymous
  • anonymous
then you get 1, yes?
amistre64
  • amistre64
you should lol
angela210793
  • angela210793
OMG!!! That was it? OMG!!! Where's my brain :$:$ :S :(
anonymous
  • anonymous
\[cos(\pi-x)=cos(\pi)cos(x)+sin(\pi)sin(x)=-cos(x)\]
angela210793
  • angela210793
Thanks :)
anonymous
  • anonymous
i wrote that for myself, but it is a basic fact that \[cos(\pi-x)=-cos(x)\]
angela210793
  • angela210793
yea...I H* trigonometry :(:(
angela210793
  • angela210793
h8*
anonymous
  • anonymous
yeah and it only gets worse!

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