Question

If a = 3i+4j and b=7i +24j the vector having the same magnitude as b and parallel to a

Answer 1

Answer:

magnitude of b= 25

now magnitude of a= 5

hence if the parallel vector to a is assumed as 3xi+4xj

then magnitude of this vector =5x

which acc. to the question must be equal to 25

therefore 5x=25 ; or x=5

so vector parallel to a and of same magnitude as of b is 15i+20j

Answer 2

Answer:

15i + 20j is the correct answer.