Question
Mathematics Question on Vector Algebra
∣a×b∣2+∣a.b∣2=144 and ∣a∣=4 then ∣b∣ is equal to
A
8
B
12
C
4
D
3
Answer
3
Explanation
Solution
The correct answer is (D) : 4.
∣a×b∣2+∣a.b∣2=144 and ∣a∣=4 then ∣b∣ is equal to
8
12
4
3
3
The correct answer is (D) : 4.