Find an Algebraic Expression That Is Equivalent to the Expression $\cos ( \arcsin 2 x )$

question 61

Multiple Choice

Find an algebraic expression that is equivalent to the expression. $\cos ( \arcsin 2 x )$ .

• A)\(\frac { 1 } { \sqrt { 1 + 4 x ^ { 2 } } }\)
• B) \(\sqrt { 4 x ^ { 2 } - 1 }\)
• C) \(\frac { 1 } { \sqrt { 1 - 4 x ^ { 2 } } }\)
• D) \(\sqrt { 1 - 4 x ^ { 2 } }\)
• E) \(\sqrt { 1 + 4 x ^ { 2 } }\)

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