Find the exact values of sin(2u), cos(2u), and tan(2u) using the double-angle formulas.
cos(u) = − 4/5 , /2 < u <

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01-11-2022
Mathematics

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Find the exact values of sin(2u), cos(2u), and tan(2u) using the double-angle formulas.
cos(u) = − 4/5 , /2 < u <

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