anonymous
  • anonymous
Please Help! When Θ = 5 pi over 6, what are the reference angle and the sign values for sine, cosine, and tangent?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Nnesha
  • Nnesha
|dw:1433434227050:dw| these are the reference angles
Nnesha
  • Nnesha
do you know where is 5pi/6 at in unit circle ?
anonymous
  • anonymous
Thank you! Here are the multiple choice options by the way
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anonymous
  • anonymous
And I think it's in the second quadrant, right?
Nnesha
  • Nnesha
yes that's right i like degrees if you like it too then you can convert radians to degrees \[\huge\rm \frac{ 5\pi }{ 6 } \times \frac{ 180 }{ \pi }\]
Nnesha
  • Nnesha
and if you look at the unit circle 5pi/6 is here|dw:1433434723738:dw| and you need signs of cos sin and tan values for that just remember CAST rule or it is like normal x y graph
Nnesha
  • Nnesha
\(\huge\color{Green}{{\rm CAST}}\) rule is |dw:1433434776048:dw|
anonymous
  • anonymous
So that would mean that only sin is positive, and the rest are negative
Nnesha
  • Nnesha
yes that's right!
Nnesha
  • Nnesha
wait
anonymous
  • anonymous
Thank you so much!! And hm?
Nnesha
  • Nnesha
nvm :-)
anonymous
  • anonymous
Thanks again :)

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