Warm-up:
Verify the following identity:
sin(4x) = 8 cos3x sinx - 4 cosx sinx
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Questions on HW?
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Classwork:
1.) Worksheet 5.3/5.5
2.) Study for Ch. 5 Test
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Answers to Worksheet 5.3/5.5
1. 0, π
2. π/2,3π/2, π/4, 3π/4, 5π/4, 7π/4
3. 120/169
4.- 4√2
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5. 15/17
6. 3cos 2x
7. cos 2x
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8. π/4, 2π/3, 5π/4, 5π/3
9. No Solution
10. π/2, 3π/2, 0
11. π/12, 9π/12, 17π/12
π/4, 11π/12, 19π/12
5π/12, 13π/12, 21π/12
7π/12, 15π/12, 23π/12
12. π/3 + π/2(n),
5π/6 + π/2(n)
13. π/2 + 2πn,
7π/6 + 2πn,
11π/6 + 2πn
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Chapter 5 Test Tomorrow!
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