AEA June 2011

Heya, does anyone have the 2010 paper and mark scheme? It's secure/locked on the edexcel website

Also, what things will I need to know how to do without a calculator? xD All I can think of so far are:
-Trig functions for 30, 45, 60, 90 etc.
- Working with surds

An easy way to remember those trig values easily without drawing triangles is that:

30 45 60 90

$\frac{\sqrt{1}}{2} \frac{\sqrt{2}}{2} \frac{\sqrt{3}}{2} \frac{\sqrt{4}}{2} sin$

The reverse is true for cos, and then tan = sin/cos for each value.

I'm struggling to understand question 7(d) in the June 2008 AEA paper (paper and mark scheme attached). The question requires that one finds the centre of a circle, that is contained in a triangle and is just touching (tangent to) all the sides of the triangle.

The triangle is isoceles (proved in 7(c)), so I understand that the centre of the circle lies on the midpoint of BC. But, I'm stuck on how to progress after this. The mark scheme simply states that the centre of the circle is the intersection between the perpendicular bisector of BC and the angle bisector of ABC -- but, I don't understand why the centre of the circle must lie on the angle bisector of ABC? I fear I may be lacking some geometrical knowledge necessary for the understanding of this question. If someone could explain this to me, it would be much appreciated.

Thanks

An easy way to remember those trig values easily without drawing triangles is that:

30 45 60 90

$\frac{\sqrt{1}}{2} \frac{\sqrt{2}}{2} \frac{\sqrt{3}}{2} \frac{\sqrt{4}}{2} sin$

The reverse is true for cos, and then tan = sin/cos for each value.

Does anyone have answers/markscheme for last year's paper (2010)? I've spent a lot of time searching for it, with no luck

Does anyone have answers/markscheme for last year's paper (2010)? I've spent a lot of time searching for it, with no luck

This probably sounds like a ridiculous question and I guess it's just the nervousness before the exam, but could someone tell me what I need to bring on the day of the test?

I believe we are provided a formula booklet, so is it just a pencil and a biro? Do I need to bring any paper at all?

Pen, pencil, ruler, rubber (+ sharpener maybe)

Is it possible that vectors don't come up... I hate them!

Yeah, I would appreciate that thanks!

Have you gone through that booklet with old S-level questions, yet? It's good prep and means you can save the papers till your ready to do them in timed conditions. I've attached it for you.

hi could u please let em know where i couls find the solutions to thjese.. particularly stuck on Q 8

The mark scheme simply states that the centre of the circle is the intersection between the perpendicular bisector of BC and the angle bisector of ABC -- but, I don't understand why the centre of the circle must lie on the angle bisector of ABC?

Guys can you help me with 6)d from the 08 paper. I looked at the mark scheme but don't get the bit about reflection.

grrrr can anyone explain to me q6 d) and 7b) from the 2008 paper