anonymous
  • anonymous
Trying to figure out how to find the length of a polar curve eq - r=7sin(theta + Pi/4). I do not know how to do this HELP
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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bahrom7893
  • bahrom7893
what is the equation? r = 7Sin(theta+Pi/4) or - r = 7Sin(theta+Pi/4) ?
anonymous
  • anonymous
r=
bahrom7893
  • bahrom7893
okay so..

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bahrom7893
  • bahrom7893
\[Length = \int\limits_{a}^{b} \sqrt{r^2+(dr/d \theta)^2}d \theta\]
bahrom7893
  • bahrom7893
Now the hard part here is, finding the limits.. i forgot how to do that, let me graph this thing, see what it looks like..
bahrom7893
  • bahrom7893
still tryin to figure out limits...
bahrom7893
  • bahrom7893
do you know how to find limits? I've always been bad at polar stuff...
anonymous
  • anonymous
no - this problem came from my College algebra/trig 400 class. Not doing integration yet.
bahrom7893
  • bahrom7893
I think i know the limits, but sorry I can't solve this without integrating, never learned any other way of finding arclength..=(

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