The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

What are the vectors for Vertical and Horizontal plane

Hi on question 7ii on
http://www.mei.org.uk/files/papers/2011_June_c4.pdf
the markscheme states that the horizontal plane is (0,0,1).
Is that not the vertical plane?

On this paper q7ii
http://mei.org.uk/files/papers/c410ju_weio.pdf
the vertical is again (0,0,1).

How can both the vertical and horizontal plane have the same vector? The markscheme can't be wrong can it?

Markscheme: http://www.mei.org.uk/files/papers/2011_June_c4.pdf
Original post by user1-4
Hi on question 7ii on
http://www.mei.org.uk/files/papers/2011_June_c4.pdf
the markscheme states that the horizontal plane is (0,0,1).
Is that not the vertical plane?

On this paper q7ii
http://mei.org.uk/files/papers/c410ju_weio.pdf
the vertical is again (0,0,1).

How can both the vertical and horizontal plane have the same vector? The markscheme can't be wrong can it?

Markscheme: http://www.mei.org.uk/files/papers/2011_June_c4.pdf


(0,0,1) is n
n is perpendicular to the plane
Reply 2
Avatar for user1-4
user1-4
OP
1
Original post by TenOfThem
(0,0,1) is n
n is perpendicular to the plane


Hi, sorry if I sound stupid I'm self taught (just used past papers), but what do you mean by it's n?


I know the normal to the plane ABC (x + y − 2z + d = 0,) is (1,1,-2).
Original post by user1-4
Hi, sorry if I sound stupid I'm self taught (just used past papers), but what do you mean by it's n?


I know the normal to the plane ABC (x + y − 2z + d = 0,) is (1,1,-2).


Sorry, ages since I have done vector planes :smile:

n is the normal vector - the vector that is perpendicular to the plane

so - you want the horizontal plane - the normal is a vector in the z direction


The angle between the perpendicular vectors = the angle between the planes
(edited 9 years ago)
Reply 4
Avatar for BabyMaths
BabyMaths
Original post by user1-4
Hi, sorry if I sound stupid I'm self taught (just used past papers), but what do you mean by it's n?


I know the normal to the plane ABC (x + y − 2z + d = 0,) is (1,1,-2).


and the normal to the plane z=0 is <0,0,1>.
Reply 5
Avatar for user1-4
user1-4
OP
1
Original post by TenOfThem
Sorry, ages since I have done vector planes :smile:

n is the normal vector - the vector that is perpendicular to the plane

so - you want the horizontal plane - the normal is a vector in the z direction


The angle between the perpendicular vectors = the angle between the planes



Original post by BabyMaths
and the normal to the plane z=0 is <0,0,1>.


thanks so from my understanding the vector of the horizontal is (1,1,0) and of the horizontal plane
is (0,0,1)

and if i am finding the angle using a x+y+z=d method, I have to use the planes?

But if I were to be finding the angle between say AB (6,7,8) I would use the normal horizontal and not the horizontal plane?

Thanks

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you