Babynini
  • Babynini
a) sketch curve b) find a rectangular coordinate equation for the curve by eliminating the perimeter x=sec(t), y=tan(t), 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Babynini
  • Babynini
I simplified x into x= 1/cos(t) and y = sin(t)/cos(t) then y = [sin(t)][1/cos(t)]
Babynini
  • Babynini
then plugged x into y and got y=sint(x)
Babynini
  • Babynini
eem..I got confused on that second part there because there's lots of ='s xD yeah the first part is easy

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Loser66
  • Loser66
ok, line by line y^2 = tan^2 t , ok?
Babynini
  • Babynini
right
Babynini
  • Babynini
yup
Babynini
  • Babynini
yeah.aah I see.
Loser66
  • Loser66
ok, last line is obvious. right?
Babynini
  • Babynini
Yep!!
Babynini
  • Babynini
well the sec^2t= x^2 makes sense
Babynini
  • Babynini
how you got to x^2-1=y^2 I don't know.
Loser66
  • Loser66
how cannot? y^2 +1 = x^2 just -1 both sides
Babynini
  • Babynini
Oooh sorry, i had written it wrong on my paper. k.
Babynini
  • Babynini
it could also be written x^2-y^2=1 right?
Loser66
  • Loser66
sure
Babynini
  • Babynini
then we just plug in numbers for x and find y.
Babynini
  • Babynini
Kk's thanks! :)
Loser66
  • Loser66
hihihi... tip for a) x^2 -y^2 =1 is a hyperbola with the center at origin
Babynini
  • Babynini
Oo that is helpful.
Babynini
  • Babynini
Hold up, how do I find the perimeter?
Babynini
  • Babynini
like they give me 0

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