Find an Algebraic Expression That Is Equivalent to the Expression $\sec ( \arctan 4 x )$

question 81

Multiple Choice

Find an algebraic expression that is equivalent to the expression. $\sec ( \arctan 4 x )$

• A) \(\sqrt { 16 x ^ { 2 } + 1 }\)
• B) \(\sqrt { 1 - 16 x ^ { 2 } }\)
• C) \(\frac { \sqrt { 16 x ^ { 2 } - 1 } } { 16 x ^ { 2 } - 1 }\)
• D) \(\sqrt { 16 x ^ { 2 } - 1 }\)
• E) \(\frac { \sqrt { 16 x ^ { 2 } + 1 } } { 16 x ^ { 2 } + 1 }\)