Question
Mathematics Question on Vector Algebra
If ∣a+b∣=∣a−b∣ then
A
a and b are coincident.
B
a and b are prependicular.
C
Inclined to each other at 60°.
D
a and b are parallel.
Answer
a and b are prependicular.
Explanation
Solution
The correct answer is (B) : a and b are prependicular.