Mathematics, 10.05.2021 06:50 mommer2019

Cos30=√3/2 prove cos15=√3+1/2√2

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Cos30=√3/2 prove cos15=√3+1/2√2...

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Cos30=√3/2 prove cos15=√3+1/2√2​

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Cos30=√3/2 prove cos15=√3+1/2√2