Use Identities to Find the Exact Value $\cos \left( - \frac { 7 \pi } { 12 } \right)$

question 443

Multiple Choice

Use Identities to find the exact value.
- $\cos \left( - \frac { 7 \pi } { 12 } \right)$

• A) \(\sqrt { 6 } + \sqrt { 2 }\)
• B) \(\sqrt { 2 } - \sqrt { 6 }\)
• C) \(\frac { \sqrt { 2 } - \sqrt { 6 } } { 4 }\)
• D) \(\frac { \sqrt { 6 } - \sqrt { 2 } } { 4 }\)

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Definitions:

Physi/o

A prefix in medical terminology that relates to nature or the physical body.

Immune Response

The body's defense mechanism against foreign substances or pathogens, involving recognition, response, and memory components of the immune system.

Medication

Substances used to treat or prevent diseases and conditions.

Ambi-

A prefix meaning both, indicating inclusivity or both sides, used in various scientific and medical terminologies.