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  1. T

    Perms and combs question

    Hi guys i tried to do this question but didnt work out. http://prnt.sc/cdwvth I tried doing (2nC2) where u choose 2 people out of 2n people for Pn but didnt know how to get Pn-1 thanks
  2. T

    CSSA Business Studies Thoughts

    all good. worth a try since theres no other way to study for it :)
  3. T

    CSSA Business Studies Thoughts

    sorry but do u mind if i ask if u had umat notes i could take? id appreciate it greatly if u did :)
  4. T

    CSSA Business Studies Thoughts

    67/70 for 3 unit is beast. nice how'd u manage time, its only 2 hours :blink2:
  5. T

    CSSA Business Studies Thoughts

    judging from your username im assuming ur jasnoor right? i go parramatta marist too im in yr 11 though :)
  6. T

    CSSA Business Studies Thoughts

    do you go parramatta marist?
  7. T

    Trig solutions question

    Also if x approached Pi/2 wouldn't there be a vertical asymptote at x=Pi/2
  8. T

    Trig solutions question

    Omg How did I not realise that. I knew it was something like that. Thx a lot
  9. T

    Trig solutions question

    (Sinx-1)(tanx+2)=0 How many solutions are there between 0 and 2pi ? I got 3 solutions but the answers says 2.
  10. T

    Projectile motion help

    No not really :)
  11. T

    Projectile motion help

    I get it now! Thanks so much!!
  12. T

    Projectile motion help

    Sorry I don't understand that. We haven't learnt about annulus yet. Also I don't understand how it got minimum range to be 30 or 60 degrees. Whoops I just realised what annulus is sorry. But still don't get the minimum range bit.
  13. T

    Projectile motion help

    Hey guys So I don't know how to do this and I need help. A gun can fire shells with speed "u" at elevations between 30 and 60 degrees. Find the area commanded by the gun on a horizontal plane, assuming that the gun can be rotated about vertical axis so as to point in any desired direction...
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