If a,b are different values of \[x\] satisfying \[a\cos x+b\sin x=c,\] – McqOptions

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1.	If a,b are different values of \[x\] satisfying \[a\cos x+b\sin x=c,\] then \[\tan \text{ }\left( \frac{\alpha +\beta }{2} \right)=\] [EAMCET 1986; Orissa JEE 2003]
A.	\[a+b\]
B.	\[a-b\]
C.	\[\frac{b}{a}\]
D.	\[\frac{a}{b}\]
Answer» D. \[\frac{a}{b}\]

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