How did u express the sides?, if u didnt use the sine rule?
For that first part of Q7 did u have a constant for part 2? Iam sure i stufed it up but just wondering...
I couldnt do 3D in the exam but figured it out when I got home. h=0.2m (it looks wrong though).
I used the sine rule and expressed AC and BC in terms oh h then ABS is just a rght angle triangle?