Find the value of\[\frac{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{-1}}{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{+1}}\]if\[\mathbf{k}=\mathbf{sec}\theta -\mathbf{tan}\theta \].

Find the value of\[\frac{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{-1}}{{{\ma

1.	Find the value of\[\frac{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{-1}}{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{+1}}\]if\[\mathbf{k}=\mathbf{sec}\theta -\mathbf{tan}\theta \].
A.	\[Sin\text{ }\theta \]
B.	\[Cos\text{ }\theta \]
C.	\[-Sin\text{ }\theta \]
D.	\[-Cos\text{ }\theta \]
E.	None of these
Answer» D. \[-Cos\text{ }\theta \]

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Find the value of\[\frac{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{-1}}{{{\mathbf{k}}^{\mathbf{2}}}\mathbf{+1}}\]if\[\mathbf{k}=\mathbf{sec}\theta -\mathbf{tan}\theta \].

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