Find an Algebraic Expression Equivalent to the Given Expression $\sin ( \operatorname { arcsec } u )$

Find an algebraic expression equivalent to the given expression.
- $\sin ( \operatorname { arcsec } u )$

A) $\frac { \mathrm { u } \sqrt { \mathrm { u } ^ { 2 } + 1 } } { \mathrm { u } 2 + 1 }$
B) $\frac { \sqrt { u ^ { 2 } - 1 } } { u }$
C) $\sqrt { \mathrm { u } ^ { 2 } - 1 }$
D) $\sqrt { \mathrm { u } ^ { 2 } + 1 }$

Correct Answer:

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