question_answer

lf\[\mathbf{tan}\theta =\frac{a}{b},\], find the value of \[\frac{\cos \theta +\sin \theta }{\cos \theta -\sin \theta }\]

A) \[\frac{a-b}{b-a}\]         

B) \[\frac{b+a}{b-a}\]

C) \[\frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}-{{b}^{2}}}\]       

D) \[\frac{b}{a-b}\]

E) None of these