Mathematics, 22.05.2021 06:30 jc624826
Alpha and bettas are acute angles, ѕіn a = 3/5, cos b =1/2 then what is the value of cos(a + b) =?
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Alpha and bettas are acute angles, ѕіn a = 3/5, cos b =1/2 then what is the value of cos(a + b) =?...
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