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## stepht one year ago 5 cos 2 θ = 1 for 0o < θ < 360o

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1. IrishBoy123

$$5 cos 2 θ = 1$$ so $$cos 2 θ = \frac{1}{5}$$ |dw:1439500108937:dw| solve for $$2 \theta$$ using you calculator, then for $$\theta$$

2. IrishBoy123

|dw:1439504516898:dw|

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