[Icantthinkofausern]

How do you work out the magnitude of two vectors?

[TenOfThem]

You work out the magnitude of a vector by using Pythagoras' theorem

[Icantthinkofausern]

(Original post by TenOfThem)
You work out the magnitude of a vector by using Pythagoras' theorem

Aha I see, so what would be the magnitude of C
A=(4) B=(2) c=(6)
( -2 ) (3) (5)




Sorry I've not drawn the vectors particularly well :L

[Icantthinkofausern]

(Original post by Icantthinkofausern)
Aha I see, so what would be the magnitude of C
A=(4) B=(2) c=(6)
( -2 ) (3) (5)




Sorry I've not drawn the vectors particularly well :L

Sorry C= (6)
(5)

[TenOfThem]

if C =

6
5

then |c|^2 = 6^2 + 5^2

[Icantthinkofausern]

(Original post by TenOfThem)
if C =

6
5

then |c|^2 = 6^2 + 5^2

Sorry, forgive me, I'm slow. ^

[Icantthinkofausern]

(Original post by Icantthinkofausern)
Sorry, forgive me, I'm slow. ^

what does ^ mean?

[Oh my Ms. Coffey]

(Original post by Icantthinkofausern)
what does ^ mean?

Its used for writing powers.

2^2 = 2 squared = 4.