anonymous
  • anonymous
Find the point on the terminal side of θ = negative three pi divided by four that has an x coordinate of -1. Show your work for full credit.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
do you know which quadrant this is in?
anonymous
  • anonymous
no maybe the 3rd?
anonymous
  • anonymous
2nd. pull up this unit circle http://www.regentsprep.org/regents/math/algtrig/att5/600px-Unit_circle_angles_svg.jpg

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anonymous
  • anonymous
i know what the unit circle is but how did you know it was in the 2nd quadrant
anonymous
  • anonymous
look at the angle measurements. 3π/4 is in the second quadrant (135°)
anonymous
  • anonymous
but its negative
anonymous
  • anonymous
it is in 3rd
anonymous
  • anonymous
oh I missed that :( sorry. It is in the 3rd then
anonymous
  • anonymous
-3π/4 is the same as 5π/4
anonymous
  • anonymous
y=x tan(θ )
anonymous
  • anonymous
thats how you find the terminal side?
anonymous
  • anonymous
x=-1 the point is (-1,y)
anonymous
  • anonymous
so to find y i just use that equation?
anonymous
  • anonymous
yes. The terminal side is basically the angle. And you can use that formula to find y
anonymous
  • anonymous
okay thank you so much

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