\[\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=\] [Roorkee 1970; IIT 1966]

\[\frac{\cos A-\sin A}{\cos A+\sin A}\]

\[\frac{\cos B+\sin B}{\cos B-\sin B}\]

\[\frac{\cos A+\sin A}{\cos A-\sin A}\]

\[\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=\] [Roorkee 1970

1.	\[\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=\] [Roorkee 1970; IIT 1966]
A.	\[\frac{\cos B+\sin B}{\cos B-\sin B}\]
B.	\[\frac{\cos A+\sin A}{\cos A-\sin A}\]
C.	\[\frac{\cos A-\sin A}{\cos A+\sin A}\]
D.	None of these
Answer» C. \[\frac{\cos A-\sin A}{\cos A+\sin A}\]

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\[\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=\] [Roorkee 1970; IIT 1966]

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