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# AQA level 2 Further maths GCSE watch

1. (Original post by Dorisdolphine)
is it -5/6 or 5/6?
5/6
2. (Original post by Alex.trin)
Surely it can't be simplified as 36 isn't divisible by 5?
yeah but if it's the square root of -25/36, you can square root both the top and bottom of the fraction to get -5/6
3. (Original post by lily628)
yeah but if it's the square root of -25/36, you can square root both the top and bottom of the fraction to get -5/6
its not negative 5/6 , its positive
4. For the obtuse angle question
Did anyone else get cosx =-5/6
5. (Original post by chelseafc141)
For the obtuse angle question
Did anyone else get cosx =-5/6
I got -5/6 as well
6. (Original post by Alex.trin)
Surely it can't be simplified as 36 isn't divisible by 5?
Ohhhhh I seen, you square root them. Hopefully I've only lost 1 marks
7. (Original post by ihatehannah)
its not negative 5/6 , its positive
The angle is obtuse so X would lie in the sin quadrant so cos x would be negative
8. oh yeah its negative my bad
9. -5/6 its obtuse a positive would be acute

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10. (Original post by ihatehannah)
its not negative 5/6 , its positive
i put that too, but everyone is saying bc it's obtuse it's -5/6
11. (Original post by Dorisdolphine)
Ohhhhh I got 80 😂
I got -80
13. (Original post by vishantu_success)
lol
39
14. For the question about n is towards infinity did anyone get 5/3?
15. (Original post by SmithAmelia)
Could anyone who has successfully finished the last question please explain how they reached their answer? Thanks
I did the cosA= version of the cosine rule and came to the conclusion that w=3n which means 2 sides were equal to 3n so it was isosceles.
16. what did everyone get for the matrix q
17. (Original post by lily628)
lol
39
I did too!
18. (Original post by Mattyates2000)
For the question about n is towards infinity did anyone get 5/3?
ahhh 3/5 is what i put...
19. (Original post by lily628)
lol
39
I got 39 too
20. (Original post by Dorisdolphine)
ahhh 3/5 is what i put...
Oh yh sorry that was what I meant

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