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

question 11

Multiple Choice

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

• A) \(\frac { \sqrt { 15 } } { 4 }\)
• B) \(\frac { 4 \sqrt { 15 } } { 15 }\)
• C) \(\frac { \sqrt { 15 } } { 2 }\)
• D) \(\frac { 2 \sqrt { 15 } } { 15 }\)

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Definitions:

Long-Term Memory

The stage of the memory process where information is stored for prolonged periods of time, ranging from minutes to a lifetime.

Distractibility

The quality of being easily drawn away from the task at hand or having one's focus easily shifted from the desired object of attention.

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The quality of having experience, knowledge, and good judgment; the ability to apply perceptions, judgements and actions in keeping with this understanding.

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The average period that a person may expect to live.