anonymous
  • anonymous
find exact value of sin(-pi/3) w/o calculator
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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amistre64
  • amistre64
you would have to pythag out an equilateral triangle
amistre64
  • amistre64
|dw:1378233346214:dw|
anonymous
  • anonymous
sin -x = -sin x sin pie/3 = sin 60 degrees http://www.google.co.in/imgres?um=1&sa=N&biw=1024&bih=677&hl=en&tbm=isch&tbnid=k6GxsGs3Esla7M:&imgrefurl=http://library.thinkquest.org/20991/alg2/trig.html&docid=2tGM3v3z0255kM&imgurl=http://library.thinkquest.org/20991/media/alg2_table.gif&w=384&h=298&ei=1iwmUrCDNrGZiAfM-ICACA&zoom=1

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anonymous
  • anonymous
|dw:1378235290486:dw|
anonymous
  • anonymous
is it - sqrt3/2
anonymous
  • anonymous
correct
anonymous
  • anonymous
if i was not looking at my unit circle, how would I do this
anonymous
  • anonymous
\[\sin \left( -\theta \right)=-\sin \theta \] in 1st all the t- ratios are positive sin and cosec is positive in 1st and 2nd quadrants in 3rd quadrant only tan and cot are positive. In 4th quadrant only cos and sec are positive.
anonymous
  • anonymous
|dw:1378236734770:dw|
goformit100
  • goformit100
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