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OpenStudy (anonymous):
Use identities (no calculators) to nd the exact value for (sin 33)(cos 12) + (cos 33)(sin 12)
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OpenStudy (anonymous):
33+12 =?
OpenStudy (anonymous):
what exact values do you know for trigonmetry, there are 9 of them ,
OpenStudy (anonymous):
Its 45 degrees, but do I use sin or cos?
OpenStudy (anonymous):
is it 1/ sqrt (2)
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