Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    0
    ReputationRep:
    I finished C3 a while ago and found it mostly ok, I have been re-visiting a lot of it recently and working on harder examples and getting a good understanding of everything. The next topic I'm coming too though is Proving trignometric equations and I find this so hard compared to the rest of C3. Questions where you are asked to show that two trignometric equations are equal just stump me, my teacher told me to thing of them as a puzzle and try to re-arrange and think carefully about how to get from one to the other but I just end up not being able to. I appreciate that me working on these types of equations in the coming weeks will help but does anyone have any methodologies or tips that make it easier to identify what direction I need to take.
    Offline

    16
    ReputationRep:
    (Original post by Mopatop)
    I finished C3 a while ago and found it mostly ok, I have been re-visiting a lot of it recently and working on harder examples and getting a good understanding of everything. The next topic I'm coming too though is Proving trignometric equations and I find this so hard compared to the rest of C3. Questions where you are asked to show that two trignometric equations are equal just stump me, my teacher told me to thing of them as a puzzle and try to re-arrange and think carefully about how to get from one to the other but I just end up not being able to. I appreciate that me working on these types of equations in the coming weeks will help but does anyone have any methodologies or tips that make it easier to identify what direction I need to take.
    If in doubt

    Change everything to sinx and cosx

    Remember sin^2x + cos^x = 1

    Remove fractions in fractions

    Look out for DOTS


    If still stuck look at the answer ... Possibly work backwards a few lines
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

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

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

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