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Trig Help

  1. Feb 25, 2017 #1
    1. The problem statement, all variables and given/known data
    P(-5,-2) is a terminal point of angle theta in standard position. State the exact values of all the trigonometric rations for theta.

    2. Relevant equations
    x^2+y^2=r^2
    csc=1/sin
    sec=1/cos
    cot=1/tan

    3. The attempt at a solution
    WIN_20170225_15_39_57_Pro.jpg
     
  2. jcsd
  3. Feb 25, 2017 #2

    Ray Vickson

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    Your image is unreadable. Please type out your solution.
     
  4. Feb 25, 2017 #3
    1488061120576.jpeg
     
  5. Feb 25, 2017 #4

    LCKurtz

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    Check your signs on the tan and cot.
     
  6. Feb 25, 2017 #5
    Tan is y/x and Cot is x/y.. what's wrong with it?
     
  7. Feb 25, 2017 #6

    LCKurtz

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    In what quadrants are tan and cot positive vs negative?
     
  8. Feb 25, 2017 #7
    1 and 3
     
  9. Feb 25, 2017 #8
    Pos in quadrant 1 neg in quadrant 3
     
  10. Feb 25, 2017 #9

    LCKurtz

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    Wrong. Look in your text.
     
  11. Feb 25, 2017 #10
    Explain. I learn "CAST" to help remember that but first you explain
     
  12. Feb 25, 2017 #11

    LCKurtz

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    I don't know or care what CAST is, but whatever it is you would do better to just understand the signs. What do you get if you calculate ##\tan \theta = \frac{-2}{-5}##?
     
  13. Feb 25, 2017 #12

    LCKurtz

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    Perhaps you can find someone else to help you. I'm done.
     
  14. Feb 25, 2017 #13

    Dale

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    Closed for cleanup
     
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