If the magnitudes of two vectors \overrightarrow{{a}} and \overrightarrow{{b}} are equal then which one of the following is correct?

Correct Answer is : (→a+→b) is perpendicular to (→a−→b)

(\overrightarrow{{a}}+\overrightarrow{{b}}) is parallel to (\overrightarrow{{a}}-\overrightarrow{{b}})

(\overrightarrow{{a}}+\overrightarrow{{b}}) \.(\overrightarrow{{a}}-\overrightarrow{{b}})=1

(\overrightarrow{a}+\overrightarrow{b}) is perpendicular to ({a} ^{\to}-\overrightarrow{b})

UPSC NDA Math Model Paper 3

Question : 67 of 120

Marks: +1, -0

If the magnitudes of two vectors

→

and

→

are equal then which one of the following is correct?

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