anonymous
  • anonymous
Find an exact value. sin (17pi/12)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
you can always plug it in a calculator
anonymous
  • anonymous
idk how
anonymous
  • anonymous
try using this websiite: http://www.wolframalpha.com/

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anonymous
  • anonymous
Type in what you wrote and it will give you the exact value.
anonymous
  • anonymous
It will also explain some reasoning behind it.
anonymous
  • anonymous
http://www.wolframalpha.com/input/?i=sin+%2817pi%2F12%29 here i plug it in for you
anonymous
  • anonymous
the input is wrong its not written correctly
anonymous
  • anonymous
sin (17pi ) parenthesis around the whole thing ----- 12
anonymous
  • anonymous
Ok then plug that in.
anonymous
  • anonymous
how?
anonymous
  • anonymous
Idk you just wrote it for me. lol you tell me
anonymous
  • anonymous
sin (17pi/12) = sin255
anonymous
  • anonymous
i think they want her to evaluate that expression without a calculator, and to do that you would have to refer to the calculator
anonymous
  • anonymous
i mean refer to the UNIT CIRCLE and not the calculator
anonymous
  • anonymous
Sin ( 180 + 75) = -Sin 75
anonymous
  • anonymous
Pretty sure that "exact value" means -not- to use a calculator but something like sin(a-b)=
anonymous
  • anonymous
http://www.wolframalpha.com/input/?i=sin+%2817pi+over+12%29 it didnt give me what i was looking for the answer choices have sqr.6 and sqr.2/4 with differnt signs as answers
anonymous
  • anonymous
do you know what the sin and cosine of 1pi, 1/2 pi and 1/6 pi? also known as 180 degrees, 90 degrees and 30 degrees?
anonymous
  • anonymous
Sin 75 = sin(45 + 30) = sin45 cos 30 + cos45 sin30
anonymous
  • anonymous
no
anonymous
  • anonymous
wat no ?
anonymous
  • anonymous
can yu draw a circle and locate (17pi)/12 ? http://www.google.com/imgres?hl=en&client=firefox-a&hs=Ghp&sa=X&tbo=d&rls=org.mozilla:en-US:official&biw=1024&bih=638&tbm=isch&tbnid=-ZbhXMr4cqmhmM:&imgrefurl=http://departments.xavierhs.org/mathematics/Algebra_2/A2_Chapter_Review/Unit_Circle.htm&docid=BmSp3n0YTMKfYM&imgurl=http://departments.xavierhs.org/mathematics/Site_Graphics/Graphs_Charts/unit_circle/un_circle.gif&w=722&h=668&ei=xVaqUMmLCKr7ygH-8oGQCA&zoom=1&iact=hc&vpx=380&vpy=308&dur=3253&hovh=216&hovw=233&tx=139&ty=139&sig=112213257504048165490&page=2&tbnh=142&tbnw=154&start=18&ndsp=24&ved=1t:429,r:20,s:0,i:203
anonymous
  • anonymous
where is that located confused?
anonymous
  • anonymous
17pi / 12 to degrees is (17pi)/12 * 180/pi, which is 255 degrees, can yu locate 255 degrees?
anonymous
  • anonymous
You can't just pop up a unit circle with values. You have to explain how you get those values for those certain degrees.
anonymous
  • anonymous
fine, then explain to her
anonymous
  • anonymous
did you see thw attacment with the question
anonymous
  • anonymous
yea, i saw it

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