Vectors

Question 1

posistion vectors
->
AB

Answer 1

= b-a

Question 2

vecor a and b are parrel if

Answer 2

vecotr a = £b where
£=lambda, and £ is a constant

Question 3

if vecotor a = xi + yj +zk then magnitude is

Answer 3

|a|= root(x^2 + y^2 + z^2)

Question 4

unit vecotr (a with ^ on top) =

Answer 4

(1/|a| ) x a

Question 5

angle with axes: cos@x =

Answer 5

x/|a|

Question 6

angle with axes: cos@y=

Answer 6

y/|a|

Question 7

angle with axes: cos@z

Answer 7

z/|a|