Question
Mathematics Question on Vector Algebra
If a.b=0 and a+b makes an angle 60° with a then
A
∣a∣=2∣b∣
B
2∣a∣=∣b∣
C
∣a∣=3∣b∣
D
3∣a∣=∣b∣
Answer
3∣a∣=∣b∣
Explanation
Solution
The correct answer is (D) : 3∣a∣=∣b∣.
If a.b=0 and a+b makes an angle 60° with a then
∣a∣=2∣b∣
2∣a∣=∣b∣
∣a∣=3∣b∣
3∣a∣=∣b∣
3∣a∣=∣b∣
The correct answer is (D) : 3∣a∣=∣b∣.