Turn on thread page Beta
    • Thread Starter
    Offline

    10
    ReputationRep:
    help with part two please !! already did part one.

    Name:  image-cfdb0e09-b01a-4d02-b159-82649371bd6a1494056874-compressed.jpg.jpeg
Views: 15
Size:  22.8 KB
    Posted on the TSR App. Download from Apple or Google Play
    • Community Assistant
    Offline

    20
    ReputationRep:
    Community Assistant
    (Original post by Jian17)
    help with part two please !! already did part one.
    What's the issue? Draw a diagram to help you out if you need to.
    Offline

    11
    ReputationRep:
    (Original post by Jian17)
    help with part two please !! already did part one.
    AD = BC (parallel direction vectors with equal length)

    Then can you see how to find OD?
    • Thread Starter
    Offline

    10
    ReputationRep:
    Name:  image-41804c32-aa83-46fb-a41d-68bdd9bfcff52100103103-compressed.jpg.jpeg
Views: 19
Size:  32.0 KB

    I guess OD is equal to 0.5 x OA ?
    Posted on the TSR App. Download from Apple or Google Play
    • Community Assistant
    Offline

    20
    ReputationRep:
    Community Assistant
    (Original post by Jian17)

    I guess OD is equal to 0.5 x OA ?
    Not quite.

    \overrightarrow{AD} = \overrightarrow{AB} + \overrightarrow{BC} + \overrightarrow{CD}

    Note that the vectors of AB and CD are complete opposites. So the vector \overrightarrow{AD} = \overrightarrow{BC}.

    You know C and B hence you can determine BC vector, then find the point D from there.
    • Thread Starter
    Offline

    10
    ReputationRep:
    hmmm I think I get it now, thanks! I'll try it later since im on the bus right now
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 13, 2018
Poll
Is the Big Bang theory correct?
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.