The set of values possible of θ in [-Î ,Î ], such that √1-sin θ√1+sin θ is equal to sec θ- tan θ is
a)[0,Î /2]
b)[0,Î /2)Ï
(Î /2,Î ]
c)[-Î ,0]
d)(-Î /2, Î /2)
ans d
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1 Answers
1the given expression is itself equal to the reqd. expression. Hence it's possible for the range in which both sin theta and cos theta exists ,i.e, (d).
