Hey! Sign in to get help with your study questionsNew here? Join for free to post

AQA FP1 matrices help please

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
    • Thread Starter

    Hi all,

    I have my FP1 exam on Wednesday and I need to clear up a few questions I have on matrices. If you reply, please explicitly reference (by quoting or numbered points) to which question you are referring to. This will help me understand to which point you have aimed your response.
    1. If a question says for example, "Write down the corresponding 2 x 2 matrix of a 40 degree clockwise rotation", then can I write down the 2 x 2 matrix corresponding to a 320 degree anticlockwise rotation? Surely the sine and cosine values come out to be the same and so this wouldn't matter?
    2. In my specification and in all of the past papers, I have never seen a question using radians as a measure of angles instead of degrees, in matrices related questions. Is it possible to get a question dealing with matrices in radians in AQA GCE Further Mathematics (6360)? If so, would I convert to degrees first (using 360deg = 2pi) or would I do the question in radians?
    3. Is y = (-tan(theta))x the same as y = (tan(-theta))x the same as y = -xtan(theta), when dealing with reflections using a 2 x 2 matrix?
    4. In the formulae booklet, we are given the general 2 x 2 matrix for reflections in the line y=xtan(theta). If we are given a question regarding a reflection in the line y=(-tan(theta))x, then where should we put the extra minus signs? Am I correct in thinking that I should put the extra minus signs in the top right and bottom left hand corner of the general 2 x 2 matrix for reflections, whilst retaining the preexisting minus sign in the bottom right hand corner?
    Thank you very much for your help, it is much appreciated!
Write a reply…


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: June 11, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Do you like sleeping in a cold room?
Useful resources

Make your revision easier


Maths Forum posting guidelines

Not sure where to post? Read here first


How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.