Mathematics, 22.03.2021 22:40 justinderringer03
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Angle α lies in quadrant II , and tanα= −12/5 . Angle β lies in quadrant IV , and cosβ=3/5 .
What is the exact value of sin(α+β) ?
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sin(α+β) =
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Angle α lies in quadrant II , and tanα= −12/5 . Angle β lies in quadrant IV , and cosβ=...
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