## dylanm Group Title Can someone explain to me how it is possible to determine an answer for this question? http://i.imgur.com/ahpPs.jpg The waterslide one, I've had a go at it but there simply does not seem to be enough information (equations etc) to get answers. Any ideas? one year ago one year ago

1. jasonxx Group Title

2. dylanm Group Title

The one underneath, Analysis Question 1.

3. jasonxx Group Title

use tan theta= h1/ 5

4. jasonxx Group Title

and $h1= \sqrt {l^2-25}$

5. dylanm Group Title

In order to use trig, you need an angle, but there is no angle listed in this question.

6. jasonxx Group Title

coordinate of A is (16,0)

7. dylanm Group Title

The answer section in the back of the book states it is (15,0)

8. jasonxx Group Title

hmm...wait a sec

9. jasonxx Group Title

how come this cubic equation has got two roots only??

10. jasonxx Group Title

let's say coordinate of A is (x1,0)...your cubic function will be (x-0)(x-8)(x-x1)

11. jasonxx Group Title

but at x=0 value of cubic function is h1

12. jasonxx Group Title

so the function is (x-h1)(x-5)(x-x1)

13. jasonxx Group Title

now i am realising ...this question is really a good one :)

14. jasonxx Group Title

@lgbasallote where are you...come here ..have some fun

15. lgbasallote Group Title

someone called?

16. jasonxx Group Title

yea me....check out the question and help to figure this out ...please

17. lgbasallote Group Title

sorry. i hate math...i have no idea

18. jasonxx Group Title

well i had been seeing that...you have solved mathematics for most of the time ...but it's fine....if you don't wanna get in to this

19. lgbasallote Group Title

i seriously do not have any idea. i'm just a primary school student.

20. jasonxx Group Title

cool...