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anonymous

  • one year ago

Trigonometry Algebra 2 HELP !

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  1. anonymous
    • one year ago
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    The point (−3, 1) is on the terminal side of angle θ, in standard position. What are the values of sine, cosine, and tangent of θ?

  2. freckles
    • one year ago
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    |dw:1438109485410:dw|

  3. freckles
    • one year ago
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    well you have the opp side given and the adjacent side you just need to find the hyp

  4. anonymous
    • one year ago
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    can you check my work if it's right? @freckles

  5. anonymous
    • one year ago
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    sin(θ) = opposite/hypotenuse = 1/sqrt(10) cos(θ) = adjacent/hypotenuse = 3/sqrt(10) tan(θ) = opposite/adjacent = 1/3

  6. freckles
    • one year ago
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    here

  7. freckles
    • one year ago
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    two corrections...

  8. freckles
    • one year ago
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    the adjacent side is negative

  9. freckles
    • one year ago
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    opp side is positive

  10. freckles
    • one year ago
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    so cos is neg and tan is also neg

  11. freckles
    • one year ago
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    sin(θ) = opposite/hypotenuse = 1/sqrt(10) cos(θ) = adjacent/hypotenuse = -3/sqrt(10) tan(θ) = opposite/adjacent = -1/3

  12. anonymous
    • one year ago
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    Ohh, because they are on the second quadrant, thanks !

  13. freckles
    • one year ago
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    yah

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