1. Dismiss Notice
  2. Guest, be sure to check out How To Get Into Dental School, our free downloadable PDF with step-by-step details for dental school applicants!
    Dismiss Notice
  3. Dismiss Notice
  4. Download free Tapatalk for iPhone or Tapatalk for Android for your phone and follow the SDN forums with push notifications.
    Dismiss Notice
  5. Hey Texans—join us for a DFW meetup! Click here to learn more.
    Dismiss Notice

QR questions...

Discussion in 'DAT Discussions' started by msu08, Dec 28, 2008.

  1. msu08

    7+ Year Member

    Joined:
    Nov 14, 2006
    Messages:
    60
    Likes Received:
    0
    Status:
    Pre-Dental
    tan xdegree = tan (90 – x)degree when



    A. x = 0
    B. x = -30
    C. x = -45
    D. x = -60
    E. x = -90

    answer is C why???
     
  2. Note: SDN Members do not see this ad.

  3. adizzle87

    2+ Year Member

    Joined:
    Jan 26, 2008
    Messages:
    844
    Likes Received:
    2
    Status:
    Dental Student
    a) tan0 [0] vs tan 90 [1/0]
    b) tan(-30) [-1/rad3] vs tan(120) [-rad3/1]
    c) tan(-45) [-1] vs tan(135) [-1]

    The key is to know your triangles about your unit circle. Knowing the ASTC pnemonic (All Students Take Calculus) helps with getting the angle and signs right as well.
     

Share This Page