A) 1
B) -1
C) 0
D) None of these
Correct Answer: C
Solution :
\[\frac{\cos \,{{12}^{o}}-\sin \,{{12}^{o}}}{\cos \,\,{{12}^{o}}+\sin \,\,{{12}^{o}}}+\frac{\sin \,\,{{147}^{o}}}{\cos \,\,{{147}^{o}}}\] \[=\frac{1-\tan \,\,{{12}^{o}}}{1+\tan \,\,{{12}^{o}}}+\tan \,\,{{147}^{o}}\]\[=\tan \,\,{{33}^{o}}-\tan \,\,{{33}^{o}}=0\].
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