VCAA 2007 TRIG Q

[vexx]

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

[jasoN-]

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

[vexx]

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.