If cos 25°=K , determine cos50°

Marissa asked Aug 9, 2022

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Marissa asked Aug 9, 2022

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11 votes

Answer:

cos 50⁰ = cos 2.25⁰ = 2cos²25⁰ - 1 = 2K² - 1

Snels Nick answered Aug 16, 2022

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