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vera_ewing

  • one year ago

Math question

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  1. vera_ewing
    • one year ago
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  2. freckles
    • one year ago
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    you can use unit circle

  3. freckles
    • one year ago
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    3pi/4 is in what quadrant?

  4. freckles
    • one year ago
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    hint: 3/4 is between 1/2 and 1

  5. freckles
    • one year ago
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    so 3pi/4 is between pi/2 and pi

  6. freckles
    • one year ago
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    so notice the signs of both cos and sin there

  7. freckles
    • one year ago
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    cos is the x-coordinates sin is the y-coordinates what is the sign of the x-coordinates in that quadrant?

  8. freckles
    • one year ago
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    the answer choices I'm looking for: positive (+) or negative (-)

  9. freckles
    • one year ago
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    is the x-coordinates in the 2nd quadrant positive or negative?

  10. freckles
    • one year ago
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    hmmm... maybe you aren't there I will ask a summary of what I want to ask: is the y-coordinates in the 2nd quadrant positive or negative? is the x-coordinates in the 2nd quadrant positive or negative? now tan(theta)=y/x, so in the 2nd quadrant tan is positive or negative?

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