Use the angle sum identities to determine the exact value of the given expression. Зп ㅠ 13π Part A: By getting a common denominator, one can show that + = Use this fact to 4 3 12 13π determine an exact value of cos 12 Answer: 2π π 11T Part B: Use the fact that + to determine an exact value of sin 3 4 12 12 Answer:
Use the angle sum identities to determine the exact value of the given expression. Зп ㅠ 13π Part A: By getting a common denominator, one can show that + = Use this fact to 4 3 12 13π determine an exact value of cos 12 Answer: 2π π 11T Part B: Use the fact that + to determine an exact value of sin 3 4 12 12 Answer:
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Transcribed Image Text:Use the angle sum identities to determine the exact value of the given expression.
Part A: By getting a common denominator, one can show that
determine an exact value of cos(
13π
12
k
Зл
13π
+
4
====
. Use this fact to
3
12
Answer:
2π
Part B: Use the fact that
3
Answer:
74
+
71
11π
11T
to determine an exact value of sin
4
12
12
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