2015 csaa mathenatics paper (1 Viewer)

[jazz519]

For calculating the area of that circle undunked. I put AREA = Area of full circle - Area of minor segment (or dunked area)
A of circle = pi x r^2
= 256pi
A minor segment = 1/2 x r^2 x (theta - sintheta)
= 128 (2.64-sin2.64)
= 276.347053....
therefore, A = 256pi - 276.347053
= 527.873014 (dont remember how many significant figures or decimals the question asked for)

 

[tonysoprano]

for calculating the area of that circle undunked. I put area = area of full circle - area of minor segment (or dunked area)
a of circle = pi x r^2
= 256pi
a minor segment = 1/2 x r^2 x (theta - sintheta)
= 128 (2.64-sin2.64)
= 276.347053....
Therefore, a = 256pi - 276.347053
= 527.873014 (dont remember how many significant figures or decimals the question asked for)

holy shit i did it right ahahah!

 

[SlimiJay]

could you send me the results for multiple choice??

 

[jazz519]

holy shit i did it right ahahah!

Hahahaahah nice

 

[vflaash]

did anyone get y=2root3/9 for the very last question?

 

[jazz519]

Yeah I got y=(-2root3)/9 which is = -0.385 in decimals

 

[jazz519]

I got y=(-2root3)/9 which is = -0.385 in decimals

 

[vflaash]

If it was a minus wouldn't it prove it is a maximum, so you had to use the positive sign

 

[sharoooooo]

16. a) Was it moving right or left?

And made so many silly mistakes as I'm realising. Give me a 70% Jesus Christ, and I'll become a practicing Catholic.

i wrote 'positive direction, continuing in initial direction'
because the question never said left or right initially

 

[FancyPenguin]

that test was harder than the past ones, I also made too many stupid mistakes,

 

[braintic]

2012 - "That test was the hardest one I've seen."
2013 - "2012 was easy - this year's was the hardest one I've seen."
2014 - "2013 was easy - this year's was the hardest one I've seen."
2015 - "2014 was easy - this year's was the hardest one I've seen."
.
.
.

 

[tiffanyliu]

Personally I found it a lot harder than what I had been practicing with past papers from BOS.

 

[sharoooooo]

Just practice the past 10 years of CSSA Mathematics papers and it shouldve been fine

 

[Golden-Chickens]

Hows everyones maths results looking?

 

[sharoooooo]

great 87%