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Use Identities to Find the Indicated Value for Each Angle cosθ=513,π2<θ<π\cos \theta = - \frac { 5 } { 13 } , \quad \frac { \pi } { 2 } < \theta < \pi \quad

Question 71

Multiple Choice

Use identities to find the indicated value for each angle measure.
- cosθ=513,π2<θ<π\cos \theta = - \frac { 5 } { 13 } , \quad \frac { \pi } { 2 } < \theta < \pi \quad Find cos(2θ) \cos ( 2 \theta )


A) 119169- \frac { 119 } { 169 }

B) 120169\frac { 120 } { 169 }

C) 120169- \frac { 120 } { 169 }

D) 119169\frac { 119 } { 169 }

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