ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: vexx on October 16, 2010, 11:45:39 pm

Title: VCAA 2007 TRIG Q
Post by: vexx on October 16, 2010, 11:45:39 pm

Hi,

There is a question on 2007 VCAA http://www.vcaa.vic.edu.au/vce/studies/mathematics/further/pastexams/2007/2007furmath1.pdf on page 20, Q9 in trig.
I did this today, and i got (making up number since i cant remeber exactly) G's calculation to be correct at 5.8, but then the other two both =6.5.
But they said that all these equations are equal which makes no sense as 5.8 does not equal 6.5,
so why is the answer E? And not A...

Thanks heaps!

Vexx

Title: Re: VCAA 2007 TRIG Q
Post by: jasoN- on October 17, 2010, 12:00:50 am

All those equations equal to 6.553216354 (calc)
I don't do the trig module but it seems that if they all are equal, the question is quite pointless as there is nothing more to choose than E

Title: Re: VCAA 2007 TRIG Q
Post by: vexx on October 17, 2010, 12:18:27 am

Quote from: jasoN- on October 17, 2010, 12:00:50 am

All those equations equal to 6.553216354 (calc)
I don't do the trig module but it seems that if they all are equal, the question is quite pointless as there is nothing more to choose than E

oh hahaha, i have no idea why that happened, my calculated had the first one equal to 5.8 or something.. it did it both times i tried to see, and now it worked.
my calculated is annoying.

/thread.