Use the fundamental identities to find the value of the trigonometric function.
-Find $\tan ( \mathrm { s } - \mathrm { t } )$ given that $\sin \mathrm { s } = - \frac { 3 \sqrt { 13 } } { 13 }$, with $\mathrm { s }$ in quadrant $\mathrm { IV }$, and $\sin \mathrm { t } = - \frac { \sqrt { 10 } } { 10 }$, with $\mathrm { t }$ in quadrant IV.
A) $- \frac { 11 } { 3 }$
B) $- \frac { 11 } { 9 }$
C) $\frac { 11 } { 3 }$
D) $- \frac { 7 } { 9 }$

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The Answer of Use the fundamental identities to find the value of the trigonometric function.
-Find $\tan ( \mathrm { s } - \mathrm { t } )$ given that $\sin \mathrm { s } = - \frac { 3 \sqrt { 13 } } { 13 }$, with $\mathrm { s }$ in quadrant $\mathrm { IV }$, and $\sin \mathrm { t } = - \frac { \sqrt { 10 } } { 10 }$, with $\mathrm { t }$ in quadrant IV.
A) $- \frac { 11 } { 3 }$
B) $- \frac { 11 } { 9 }$
C) $\frac { 11 } { 3 }$
D) $- \frac { 7 } { 9 }$

Use the Fundamental Identities to Find the Value of the Trigonometric