PLHS - Maths

8 Responses to “Advanced Higher Maths Exam 2009”

1. 1 Cath Bremner May 23rd, 2009 at 12:01 pm

   Hi, I am currently teaching in KGS so its great to have your answers - I agree with all of them now I’ve sorted out the Q I copied down wrongly. Thanks a lot - I’ll be back in touch later
   Cath Bremner

2. 2 Vijay May 23rd, 2009 at 1:37 pm

   I would like to know if this years advanced higher maths paper was harder than last year’s one. It seems they have changed the format slightly. Any comments from any one else? Thanks

3. 3 jb May 24th, 2009 at 12:33 am

   Q16 The formula for the angle between line and plane uses cosine not sine

4. 4 Euan Doidge May 24th, 2009 at 12:36 am

   JB - I think you can use cosine instead of sine, but you’d have to take off 90 degrees anyway (so just going with sine works just as well).

5. 5 jb May 24th, 2009 at 12:45 am

   I got 67 degrees using a.b=[a][b]cos(theta)

6. 6 Euan Doidge May 24th, 2009 at 1:53 am

   Which if you take from 90 degrees (90 - 67) gives 23 - which is what you get if you use a.b=|a||b|.sin(theta). You use cosine if you want the angle between two planes, or two lines. It’s sine (or 90 - cosine) if it’s between a line and a plane.

   http://courses.scholar.hw.ac.uk/vle/scholar/session.controller?action=viewContent&contentGUID=8e61b27f-f23c-6c68-3817-c8be4c8b602e (you’ll have to log in to scholar first)

7. 7 jb May 24th, 2009 at 2:01 am

   Sorry…You’re right. I have found the angle between the normal and the line.

   Cheers

8. 8 Student May 30th, 2009 at 5:54 am

   Could someone give me an estimate of the likely cutoff for an A this year? Please and thank you.

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