Use a Sum or Difference Identity to Find the Exact $\cos 36 ^ { \circ } = \frac { \sqrt { 5 } + 1 } { 4 }$

question 135

Multiple Choice

Use a sum or difference identity to find the exact value.
-Use the exact value $\cos 36 ^ { \circ } = \frac { \sqrt { 5 } + 1 } { 4 }$ and identities to find the exact value of $\sin 36 ^ { \circ }$ .

• A) \(\frac { ( \sqrt { 10 + 2 \sqrt { 5 } } ) ( 10 - 2 \sqrt { 5 } ) } { 5 }\)
• B) \(\sqrt { 5 } + 1\)
• C) \(\frac { \sqrt { 10 - 2 \sqrt { 5 } } } { 4 }\)
• D) \(\frac { \sqrt { 10 - 2 \sqrt { 5 } } } { 8 }\)

Recognize the importance of specific sequences and promoters in gene expression of transgenes.

Understand the differences and applications of antisense RNA and siRNA in gene expression regulation.

Understand the principles and applications of miRNA in gene regulation.

Grasp the methodologies for altering gene expression and examining genome-wide expression patterns.

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