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Find sin(α+β) if cosα=35 , sinβ=−45 , α is in quadrant I and β is in quadrant III
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Find sin(α+β) if cosα=35 , sinβ=−45 , α is in quadrant I and β is in quadrant III

User Jbielick
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Sin is about 4,.002 ........
User Eaj
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