jee-main 2014 Q87

jee-main · India · 09apr Vectors Introduction & 2D Magnitude of Vector Expression

If $| \vec { a } | = 2 , | \vec { b } | = 3$ and $| \overrightarrow { 2 a } - \vec { b } | = 5$, then $| \overrightarrow { 2 a } + \vec { b } |$ equals:
(1) 5
(2) 7
(3) 17
(4) 1

If $| \vec { a } | = 2 , | \vec { b } | = 3$ and $| \overrightarrow { 2 a } - \vec { b } | = 5$, then $| \overrightarrow { 2 a } + \vec { b } |$ equals:\\
(1) 5\\
(2) 7\\
(3) 17\\
(4) 1

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