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Mathematics, 18.02.2021 21:00 heavyhearttim

PLEASE HELP Which expression is equivalent to sqrt 1-cos(10x) /2
cos(5x)
cos(20x)
sin(5x)
sin(20x)

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PLEASE HELP Which expression is equivalent to sqrt 1-cos(10x) /2
cos(5x)
cos(20x)
...

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