Questions
The vectors A and B are such that lA+Bl=lA-Bl then the angle between the two vectors will be
a
0°
b
60°
c
90°
d
180°
detailed solution
Correct option is C
Given that lA+Bl=lA-BI∴ A2 + B2 + 2A Bcos θ = A2 + B2 -2 ABcos θor 4ABcosθ=0 or cosθ=0,θ = 90°Talk to our academic expert!
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