sloppycanada
  • sloppycanada
I have done this problem about ten times, and all I ever get is is 9.7 and according to my wonderful answer sheet at the back, it is not 9.7, unfortunately. Where am I going wrong? http://prntscr.com/9cg6j0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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sloppycanada
  • sloppycanada
@UsukiDoll Save me?
UsukiDoll
  • UsukiDoll
strange... if t is the days in the year is the formula \[\huge f(t) = 11+2.2\sin((\frac{2 \pi}{365})t-1.25)\]
noahbred
  • noahbred
i got 11.5 but i have no idea what i did hahaha

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More answers

UsukiDoll
  • UsukiDoll
yay I love it when OS carps out on me. smh
UsukiDoll
  • UsukiDoll
so if the problem mentions 12th day then t = 12
sloppycanada
  • sloppycanada
That's what I thought. So I've been going with 11 + 2.2sin((2pi/365)12 - 1.25)
sloppycanada
  • sloppycanada
From what my notes tell me, it's basically just a plug in and viola! A correct answer.
baru
  • baru
whats the answer supposed to be? i get 9.1
sloppycanada
  • sloppycanada
It is 9.1 - or so I'm told. But I don't get how you got 9.1
sloppycanada
  • sloppycanada
Ooo the grammar in that post. I'm tired.
baru
  • baru
i just plugged in t=12
baru
  • baru
check your calculator, it should be set to "radians" not degree
sloppycanada
  • sloppycanada
That's what I did, but I got 9.7
sloppycanada
  • sloppycanada
When I switch to RAD, I'm looking at 10.20
baru
  • baru
i think you are messing up with the brackets when you enter it in your calculator
sloppycanada
  • sloppycanada
Oh there we go. Yeah, decided to use script calculator thanks! Now getting 9.1
UsukiDoll
  • UsukiDoll
\[\huge f(12) = 11+2.2\sin((\frac{2 \pi}{365})12-1.25)\] UGH OS COME ON! sorry OS IS TRIPPING ON ME \[\huge f(12) = 11+2.2\sin((0.017214)(12)-1.25)\] \[\huge f(12) = 11+2.2\sin((0.2065-1.25)\] \[\huge f(12) = 11+2.2\sin(-1.043429)\] \[\huge f(12) = 11+2.2(-0.864134)\] \[\huge f(12) = 11-1.9010969\] \[\huge f(12) =9.08903 \] which rounds up approximately 9.1 and i was in radians.
UsukiDoll
  • UsukiDoll
I don't have all the decimals which is why I'm a bit off, but it does come up to 9.1 or close to 9.1
UsukiDoll
  • UsukiDoll
9.0989024570422309013004511953127 whewwww xxxxx

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