AQA Core 4 Jan 2013 Q6

AQA Core 4 January 2013 exam paper on vector equations of lines and finding the angle between vectors as well as points of intersection.

[pope]

Thank you so much, I've always struggled with vectors and this has really helped me out

[mathedup]

Don't be.. I'm sure you've worked hard and you will give it your best shot which is all you can do.. Good luck! I hope the paper is nice to you :)

[mathedup]

Pleased to hear it. Good luck for tomorrow!

[mathedup]

No worries! Good luck with exam tomorrow!

[mathedup]

Great to hear. For further help, check out my website MathedUp!

Good luck with exam tomorrow!

[mathedup]

No. As we want the angle ACB, we need to use the vectors AC and BC as they both point into the angle. We could have alternatively used the vectors that point away from the angle. What would they be?

If we did use the angle AB along with AC, what angle would we have found (tell me the 3 letters)?

[louiseee]

i see so could you visualize it as a triangle so AB would be a completely different angle?? and thanks :)

[Wiizzzard]

Cheers, but on part cii do you not need to show an angle size, showing its not a square?

[louiseee]

for a)ii) could you use the vector AB instead of BC thankss!!

[mathedup]

You have already shown the angle is not a right angle in part aii

Also, a square is just a special type of rhombus so no need to highlight this fact..

[samtrip]

for part aii, how do you know whether to use BC or CB?