per2.Dec.2011.chap7 review game

per2.Dec.2011.chap7 review game - Chapter 7 Review By:...

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Chapter 7 Review By: Group 7
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Question 1 sin π/6 + sin π/4
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Answer 1 (1+√2) 2
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Question 2 Write an equivalent expression using the related acute angle tan 5 π/4
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Answer 2 tan π/4
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Question 3 Rewrite as a single trig ratio cos4x*cos3x - sin4x*sin3x
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Answer 3 cos7x
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Question 4 Rewrite as a single trig ratio and then evaluate tan170 - tan110 1 + tan170*tan110
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Answer 4 tan 60 = √3
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Question 5 Using the appropriate compound angle formula determine the exact value for each expression Tan( π/3-π/6)
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Answer 5 Square root of 3/3
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Question 6 Using appropriate compound angle formula to create an equivalent expression Cos(x+ 3 π/2)
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Answer 6 sinx
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Question 7 If sin x=4/5 and sin y=-12/13, 0<x< π/2, 3π/2<y<2π evaluate Cos(x+y)
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Answer 7 63/65
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Question 8 If sin x=4/5 and sin y=-12/13, 0<x< π/2, 3π/2<y<2π evaluate Sin(x-y)
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Answer 8 56/65
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Question 9 If sin x=4/5 and sin y=-12/13, 0<x< π/2, 3π/2<y<2π evaluate Tan(x-y)
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Answer 9 -56/33
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Question 10 Simplify sin( π+x) + sin(π-x)
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Answer 10 0
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Question 11 Prove cos C - cos D=
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per2.Dec.2011.chap7 review game - Chapter 7 Review By:...

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