## anonymous 5 years ago how do you find magnitude?

1. anonymous

of which?

2. anonymous

a vector?

3. anonymous

i think it is of two vectors.. im not sure

4. anonymous

if a,b are two vectors and angle between them is x then the magnitude's square is a^2+b^2+2ab cos x

5. anonymous

ohh ok thanks

6. anonymous

or if you're just given one vector let's say {a,b,c} then to find the magnitude of the vector then magnitude = $\sqrt{(a^2 + b^2 +c^2)}$

7. anonymous

this is possible only when the vectors are mutually perpendicular

8. anonymous

thank you

9. myininaya

remember we were finding maginture of like -3 and it was 3 then the magintude of a is |a| |a|=sqrt(a^2) what about we went from (x1,y1) and (x2,y2) it was sqrt{(x1-x2)^2+(y1-y2)^2)

10. anonymous

for any inclined angle between them u have to add a cos x term. when the angle is 90 then the cos term vanishes nd u get a result like sqrt(a^2+b^2)

11. anonymous

myininaya....u gave the distance between two vectors not the magnitude of the resultant...