Question

given that vector OA = 4i+3j and C is a point on OA such that the magnitude of vector OC is 16/5.
a/ find vector OC.
b/ is vector OB = i+4j, show that BC is perpendicular to OA.

Answer 1

To find OC find unit vector of OA
u = 4/||OA|| i + 3/||OA|| j

Answer 2

||OA|| is magnitude of OA

Answer 3

are you able to find unit vector

Answer 4

yeah

Answer 5

thank you

Answer 6

no prob