If \[|\mathbf{a}|+|\mathbf{b}|\,=\,|\mathbf{c}|\] and \[\mathbf{a}+\mathbf{b}=\mathbf{c},\] then the angle between a and b is

If \[|\mathbf{a}|+|\mathbf{b}|\,=\,|\mathbf{c}|\] and \[\mathbf{a}+\ma

1.	If \[\|\mathbf{a}\|+\|\mathbf{b}\|\,=\,\|\mathbf{c}\|\] and \[\mathbf{a}+\mathbf{b}=\mathbf{c},\] then the angle between a and b is
A.	\[\frac{\pi }{2}\]
B.	\[\pi \]
C.	0
D.	None of these
Answer» D. None of these

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If \[|\mathbf{a}|+|\mathbf{b}|\,=\,|\mathbf{c}|\] and \[\mathbf{a}+\mathbf{b}=\mathbf{c},\] then the angle between a and b is

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