anonymous
  • anonymous
Choose the point on the terminal side of -210°.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Add in 360° I think.
anonymous
  • anonymous
Do you know what terminal side is?
anonymous
  • anonymous
My choices: A. -1/1 B. -1/sqrt3 C. sqrt3/-1 D. -sqrt3/1

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Yttrium
  • Yttrium
@MandyNeedsHelp , do you know how to graph this function? That will help you a lot.
anonymous
  • anonymous
I dont, im looking at my notes right now but its all confusing.
Yttrium
  • Yttrium
But do you know what a terminal side is?
anonymous
  • anonymous
The side that the measurement of an angle ends at
anonymous
  • anonymous
In all of my examples it gives me the terminal side, thats why im confused.
Yttrium
  • Yttrium
You're correct about the terminal side. And you can use tangent to know the point, since the formula is tanx = y/x So using tan(-210), you get what?
anonymous
  • anonymous
tan is opposite/adjacent but im not sure where i find that?
Yttrium
  • Yttrium
Yes that is also true, but in coordinate plane you can use the tan=y/x
anonymous
  • anonymous
I understand, but what is tan in this problem if im supposed to multiply it by -210
Yttrium
  • Yttrium
no, you get the tan of -210 to arrive at an answer.
anonymous
  • anonymous
Im sorry, im confused. Can you just give me the answer and how you got to it? I have other problems i can do on my own.
Yttrium
  • Yttrium
-1/sqrt3
Yttrium
  • Yttrium
When you graph it, it will also appear as 150 degrees. And with that you can use the reference angle of 30 degrees because it is 30 degrees near the x-axis. As we all know tan30 =1/sqt3 and since the graph is found in the 2nd quadrant, the x value is negative. That is why it became, -1/sqrt3 |dw:1378890777212:dw|
anonymous
  • anonymous
Thank you so much for explaining it, im starting to get a better understanding of this.

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