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Trig Verbiage question

  1. Aug 23, 2013 #1
    Hello,

    In a trig verbiage such as "if cos t = -8/17 and pi/2 <t <pi" could someone please provide an alternate way of interpreting "and pi/2 <1 <pi"? I don't understand what is trying to be said with this portion. Any alternate interpretations would be wonderful.

    Thank you for your support.

    Best Wish,
    mk
     
  2. jcsd
  3. Aug 23, 2013 #2

    Pythagorean

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    Gold Member

    try drawing the expression [itex] \frac{\pi}{2} < t [/itex] graphically and reevaluating the problem.
     
  4. Aug 23, 2013 #3
    Hello Pythagorean,

    Is it basically just identifying its position on a coordinate plane? i.e. Q2 in this case?

    Regards,

    mk
     
  5. Aug 23, 2013 #4

    ehild

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    Yes, it means that the angle t is in the second quadrant.

    ehild
     
  6. Aug 23, 2013 #5

    Pythagorean

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    I would say confining the solution to Q2, but yes.
     
  7. Aug 23, 2013 #6
    Got it, thank you very much.

    Regards,
    mk
     
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