Evaluate the expressions under the given conditions?

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Science & Mathematics by Anonymous 2018-06-21 00:33:13

Social Science

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1. cos(2θ); sin(θ) = − 7/25, θ in Quadrant III 2. sin(2θ); sin(θ) = 1/9, θ in Quadrant II 3. tan(2θ); cos(θ) = 5/13, θ in Quadrant I