Use the fundamental identities to find the value of the trigonometric function.
-Given that $\tan \left( \theta - \frac { \pi } { 2 } \right) = - 0.4$, find $\cot \theta$.
A) $2.5$
B) $- 0.4$
C) $0.4$
D) $- 2.5$

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The Answer of Use the fundamental identities to find the value of the trigonometric function.
-Given that $\tan \left( \theta - \frac { \pi } { 2 } \right) = - 0.4$, find $\cot \theta$.
A) $2.5$
B) $- 0.4$
C) $0.4$
D) $- 2.5$

Use the Fundamental Identities to Find the Value of the Trigonometric