Find the Exact Value of the Expression If θ = $f ( \theta ) = \sin \theta \quad$

question 227

Multiple Choice

Find the exact value of the expression if θ = 45°. Do not use a calculator.
- $f ( \theta ) = \sin \theta \quad$ Find $3 f ( \theta )$ .

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

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