Let |a^{\to}|\neq0,|b^{\to}|\neq0 (a^{\to}+b^{\to}).(a^{\to}+b^{\to})=|a^{\to}|^2+|b^{\to}|^2 holds if and only if [NDA II 2018]

Correct Answer is : →a and →b are perpendicular

a^{\to} and b^{\to} are perpendicular

a^{\to} and b^{\to} are parallel

a^{\to} and b^{\to} are inclined at an angle of 45°

a^{\to} and b^{\to} are anti-parallel

NDA Math Vector Algebra

Question : 38 of 101

Marks: +1, -0

Let

→

|≠0,|

→

|≠0 (

→

).(

→

)=|

→

|2+|

→

holds if and only if

[NDA II 2018]

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