Use Identities to Find the Indicated Value for Each Angle $\sin \theta = \frac { 21 } { 29 } , \quad \cos \theta > 0 \quad$

question 194

Multiple Choice

Use identities to find the indicated value for each angle measure.
- $\sin \theta = \frac { 21 } { 29 } , \quad \cos \theta > 0 \quad$ Find $\cos ( 2 \theta )$

• A) \(\frac { 41 } { 841 }\)
• B) \(- \frac { 42 } { 841 }\)
• C) \(- \frac { 41 } { 841 }\)
• D) \(\frac { 840 } { 841 }\)

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