The value of the sum of two vectors \[\overrightarrow{A}\] and \[\overrightarrow{B}\] with \[\theta \] as the angle between them is [BHU 1996]

\[\sqrt{{{A}^{2}}-{{B}^{2}}+2AB\cos \theta }\]

\[\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\cos \theta }\]

If assertion is true but reason is false.

\[\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\sin \theta }\]

The value of the sum of two vectors \[\overrightarrow{A}\] and \[\over

1.	The value of the sum of two vectors \[\overrightarrow{A}\] and \[\overrightarrow{B}\] with \[\theta \] as the angle between them is [BHU 1996]
A.	\[\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\cos \theta }\]
B.	\[\sqrt{{{A}^{2}}-{{B}^{2}}+2AB\cos \theta }\]
C.	If assertion is true but reason is false.
D.	\[\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\sin \theta }\]
Answer» B. \[\sqrt{{{A}^{2}}-{{B}^{2}}+2AB\cos \theta }\]

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The value of the sum of two vectors \[\overrightarrow{A}\] and \[\overrightarrow{B}\] with \[\theta \] as the angle between them is [BHU 1996]

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