can anyone please solve this...
Attachments:
Answers
Answered by
1
C is the correct answer .
Let the new vector be C = xi + yj
Given ,
|C| = |B|
= √49 + 576
= 25
Also ,
A and C have same directions ,so
:- A ( cap ) = C ( cap ) { A ( cap ) means unit vector of A }
→ ( 3i + 4j ) / ( √9 + 16 ) = ( xi +yj ) / |C|
→ ( 3i + 4j ) / 5 = ( xi + yj ) / 25
→ xi + yj = 15i + 20j
Hence , the new vector
C = 15i + 20 j
Let the new vector be C = xi + yj
Given ,
|C| = |B|
= √49 + 576
= 25
Also ,
A and C have same directions ,so
:- A ( cap ) = C ( cap ) { A ( cap ) means unit vector of A }
→ ( 3i + 4j ) / ( √9 + 16 ) = ( xi +yj ) / |C|
→ ( 3i + 4j ) / 5 = ( xi + yj ) / 25
→ xi + yj = 15i + 20j
Hence , the new vector
C = 15i + 20 j
Similar questions