Turn on thread page Beta
 You are Here: Home >< Maths

# C4 VECTORS HELP! - Intersection between vectors, circles and spheres watch

1. Hi
If anyone could give any insight on how to solve the following problems (pg 121 Q8-9 in the AQA textbook) it'd be much appreciated. Not sure how to even approach these Q.

Thank you (I'll put a picture below)
2. (Original post by Serine)
Hi
If anyone could give any insight on how to solve the following problems (pg 121 Q8-9 in the AQA textbook) it'd be much appreciated. Not sure how to even approach these Q.

Thank you (I'll put a picture below)
3. Whoops!
Attached Images

4. (Original post by Serine)
Whoops!
You know the equation of the circle is , you also know that and plug this into the circle equation, get a quadratic in and then plug the two solutions for into the equations to get the coordinates.
5. (Original post by Zacken)
Is this what you say to all the girls you talk to?
6. (Original post by Serine)
Whoops!
Same thing with Q9, equation of sphere: - you can find parametrically from the equation of the line, then plug this into the equation of the sphere to find the requisite 's and plug back into parametrics to get the coordinates.
7. (Original post by Zacken)
Same thing with Q9, equation of sphere: - you can find parametrically from the equation of the line, then plug this into the equation of the sphere to find the requisite 's and plug back into parametrics to get the coordinates.
Thank you so much!
8. (Original post by Serine)
Thank you so much!
No problemo!

Turn on thread page Beta

### Related university courses

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.

This forum is supported by:
Updated: March 25, 2016
The home of Results and Clearing

### 1,047

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. Sheffield Hallam University
Tue, 21 Aug '18
2. Bournemouth University
Clearing Open Day Undergraduate
Wed, 22 Aug '18
3. University of Buckingham
Thu, 23 Aug '18
Poll
Useful resources

## Make your revision easier

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

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