Pre-Calc/Trig Unit 3: Analytic Trig and Applications/5.3 and 5.4 Sum//Difference Identities
Use Identities to find the exact value.cos 36° cos 24° - sin 36° sin 24°
Use Identities to find the exact value.
cos 36° cos 24° - sin 36° sin 24°]]>
1.0000000
0.3333333
0
true
true
abc
]]>
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Correct]]>
1]]>
Incorrect. 36+24=60. Evaluate Cos 60]]>
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Incorrect. 36+24=60. Evaluate Cos 60]]>
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Incorrect. 36+24=60. Evaluate Cos 60]]>