If \[a\cos \theta +b\sin \theta =m\] and \[a\sin \theta -b\cos \theta =n,\] then \[{{a}^{2}}+{{b}^{2}}=\]

If \[a\cos \theta +b\sin \theta =m\] and \[a\sin \theta -b\cos \theta

1.	If \[a\cos \theta +b\sin \theta =m\] and \[a\sin \theta -b\cos \theta =n,\] then \[{{a}^{2}}+{{b}^{2}}=\]
A.	\[m+n\]
B.	\[{{m}^{2}}-{{n}^{2}}\]
C.	\[{{m}^{2}}+{{n}^{2}}\]
D.	None of these
Answer» D. None of these

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If \[a\cos \theta +b\sin \theta =m\] and \[a\sin \theta -b\cos \theta =n,\] then \[{{a}^{2}}+{{b}^{2}}=\]

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