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Mathematics, 26.07.2019 16:30 710jonathan
Let θ be an acute angle. if cos2θ + cos2θ = 1, then cosθ = (sqrt2)/3 (sqrt6)/3 2/3 1
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Let θ be an acute angle. if cos2θ + cos2θ = 1, then cosθ = (sqrt2)/3 (sqrt6)/3 2/3 1...
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