Use the Information Given About the Angle $$\theta , 0 \leq \theta \leq 2 \pi$$

question 142

Multiple Choice

Use the information given about the angle $$\theta , 0 \leq \theta \leq 2 \pi$$ , to find the exact value of the indicated trigonometric function.
- $\cos \theta = \frac { \sqrt { 5 } } { 5 } , \quad 0 < \theta < \frac { \pi } { 2 } \quad$ Find $\sin ( 2 \theta )$

• A) \(\frac { 2 } { 5 }\)
• B) \(\frac { 4 } { 5 }\)
• C) \(\frac { 1 } { 5 }\)
• D) \(\frac { 3 } { 5 }\)

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