Does anyone have 2017 Spesh Northern hemisphere exam 2 solutions

[Kihun]

I'm stuck on 1. a, but vcaa's examination report only provides the final answers. Can anyone help me out??

[VanillaRice]

What progress have you made with the question so far?
HINT: Have a look at the double angle formula on your formula sheet, and think about what the potential values of x and 2x could be

[atar.notes.user]

i need help too, am not getting the right answer

[VanillaRice]

i need help too, am not getting the right answer

HINT: Have a look at the double angle formula on your formula sheet, and think about what the potential values of x and 2x could be

I'll let you finish it from here. Post if you're still stuck.

Hope this helps

[atar.notes.user]

I'll let you finish it from here. Post if you're still stuck.

Hope this helps

yeah i did that, LHS when simplified is -√3/3
so now i have (2t) ÷ (1-t^2)= -√3/3

and then im getting -√3t^2 + 6t + √3=0 which is wrong

pls let me know what im doing wrong

EDIT: i'm actually so stupid...just had to simplify :/

[Rowan1999]

I'm stuck on 1. a, but vcaa's examination report only provides the final answers. Can anyone help me out??

Sorry for the late reply, but if you still would like to see some method for the exam, check this video out -- it is made by a specialist teacher. It provides a full run-down on the entire exam 2.

https://www.youtube.com/watch?v=RmYH3PSZVrE