If \[a\tan \theta =b\], then \[a\cos 2\theta +b\sin 2\theta =\] [EAMCET 1981, 82; MP PET 1996; J & K 2005]

If \[a\tan \theta =b\], then \[a\cos 2\theta +b\sin 2\theta =\] [EAMCE

1.	If \[a\tan \theta =b\], then \[a\cos 2\theta +b\sin 2\theta =\] [EAMCET 1981, 82; MP PET 1996; J & K 2005]
A.	\[a\]
B.	\[b\]
C.	\[-a\]
D.	\[-b\]
Answer» B. \[b\]

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If \[a\tan \theta =b\], then \[a\cos 2\theta +b\sin 2\theta =\] [EAMCET 1981, 82; MP PET 1996; J & K 2005]

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