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Use the Figure to Find the Exact Value of the Trigonometric

question 194

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Use the figure to find the exact value of the trigonometric function. ​
Cos 2θ
Use the figure to find the exact value of the trigonometric function. ​ Cos 2θ ​   ​ A = 1, b = 2 ​ A) ​   B)    C) ​   D) ​   E) ​
A = 1, b = 2


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