In Exercises 4546, solve for 0 < 2. sin = cos 2. Use appropriate
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In Exercises 45–46, solve for 0 ≤ θ < 2π.
sin θ = cos 2θ. Use appropriate identities to express cos 2θ in terms of the sine function.
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Solving the doubleangle formula sin 0 1 cos 20 for cos 20 yields co...View the full answer
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