Find the Exact Value of the Given Expression Using a Sum

question 122

Multiple Choice

Find the exact value of the given expression using a sum or difference formula. $\cos \frac { 17 \pi } { 12 }$

• A) \(\frac { ( \sqrt { 3 } + 1 ) ( 2 \sqrt { 2 } ) } { 8 }\)
• B) \(\frac { ( - \sqrt { 3 } + 1 ) ( 2 \sqrt { 2 } ) } { 8 }\)
• C) \(\frac { ( \sqrt { 3 } - 1 ) ( 2 \sqrt { 2 } ) } { 8 }\)
• D) \(\frac { ( - \sqrt { 3 } - 1 ) ( 2 \sqrt { 2 } ) } { 8 }\)

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Definitions:

Ribosome

A cellular organelle composed of RNA and proteins, found throughout the cytoplasm in cells, which is involved in decoding the mRNA to produce proteins.

Nucleic Acid Bases

The parts of DNA and RNA molecules that carry genetic information, specifically adenine, thymine (in DNA), cytosine, guanine, and uracil (in RNA).

Three-Base Combinations

Sequences of three nucleotide bases in DNA or RNA, known as codons, which specify the addition of a specific amino acid to a growing polypeptide chain during protein synthesis.

mRNA Transcript

The single-stranded RNA molecule copied from one of the DNA strands of a gene, which is used as a template for protein synthesis in the ribosome.