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anonymous

  • one year ago

Please Help! When Θ = 5 pi over 6, what are the reference angle and the sign values for sine, cosine, and tangent?

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  1. Nnesha
    • one year ago
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    |dw:1433434227050:dw| these are the reference angles

  2. Nnesha
    • one year ago
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    do you know where is 5pi/6 at in unit circle ?

  3. anonymous
    • one year ago
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    Thank you! Here are the multiple choice options by the way

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  4. anonymous
    • one year ago
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    And I think it's in the second quadrant, right?

  5. Nnesha
    • one year ago
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    yes that's right i like degrees if you like it too then you can convert radians to degrees \[\huge\rm \frac{ 5\pi }{ 6 } \times \frac{ 180 }{ \pi }\]

  6. Nnesha
    • one year ago
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    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

  7. Nnesha
    • one year ago
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    \(\huge\color{Green}{{\rm CAST}}\) rule is |dw:1433434776048:dw|

  8. anonymous
    • one year ago
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    So that would mean that only sin is positive, and the rest are negative

  9. Nnesha
    • one year ago
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    yes that's right!

  10. Nnesha
    • one year ago
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    wait

  11. anonymous
    • one year ago
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    Thank you so much!! And hm?

  12. Nnesha
    • one year ago
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    nvm :-)

  13. anonymous
    • one year ago
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    Thanks again :)

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