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

C3 HELP

Announcements Posted on
    • Thread Starter
    Offline

    ReputationRep:
    Can anyone help me out on the 7th question of the june 2007 c3 paper, its part (a) thats confusing... plz help is much appreciated.:confused::eek:
    Offline

    ReputationRep:
    (Original post by Harshana12)
    Can anyone help me out on the 7th question of the june 2007 c3 paper, its part (a) thats confusing... plz help is much appreciated.:confused::eek:
    No body can help unless you tell which board are you on.

    Also give the link to the paper.
    • Thread Starter
    Offline

    ReputationRep:
    http://www.scribd.com/rainman875/d/1...question-paper


    this is the link
    Offline

    ReputationRep:
    Hey! I have C3 this morning also, going to be fun!

    Anyway, what you want to do is to first of all combine the two fractions...

    This leaves you with sin^2+cos^2 on the top (which equals one) and sin x cos on the bottom. Do you know your identites sunny Jim? 2sinxcosx = sin2x

    Sub that in and you are left with 1/0.5sin2x, which of course equals 2/sin2x = 2cosec2x
    QED

    Good luck today
    • Thread Starter
    Offline

    ReputationRep:
    How was the paper?, for me it was kind of easy but im not sure about that proving sec^2x question.THNX for the answer btw
    Offline

    ReputationRep:
    (Original post by Harshana12)
    How was the paper?, for me it was kind of easy but im not sure about that proving sec^2x question.THNX for the answer btw
    The paper discussion and its solutions are on this thread.

Reply

Submit reply

Register

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 15, 2012
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.

Poll
How do you sleep?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read here first

Equations

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

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