Mathematics, 12.11.2020 23:30 johannah51

Which expression is equal to 2 sine (StartFraction pi Over 10 EndFraction) cosine (StartFraction pi Over 10 EndFraction)? Negative sine (StartFraction pi Over 20 EndFraction)
Negative sine (StartFraction pi Over 5 EndFraction)
Sine StartFraction pi Over 5 EndFraction
Sine StartFraction pi Over 20 EndFraction

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Which expression is equal to 2 sine (StartFraction pi Over 10 EndFraction) cosine (StartFraction pi...