Give the Exact Value of the Expression $\cos \left( 2 \arcsin \frac { 1 } { 4 } \right)$

question 357

Multiple Choice

Give the exact value of the expression.
- $\cos \left( 2 \arcsin \frac { 1 } { 4 } \right)$

• A) \(\frac { 7 } { 8 }\)
• B) \(\frac { 1 } { 8 }\)
• C) \(\frac { 5 } { 8 }\)
• D) \(\frac { 3 } { 8 }\)

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