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College Math Practice Test 87

# Double Angle Identities Quiz PDF: Questions and Answers - 87

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The Quiz: 2cosαcosβ =; "Double Angle Identities" App Download (Android & iOS) Free with answers cos(α + β)- cos(α - β), cos(α + β)+ cos(α - β), sin(α + β)+ sin(α - β) and sin(α + β)- sin(α - β) to study online tutor courses. Practice trigonometric identities questions and answers, Google eBook to download free sample for GRE subject tests.

## Double Angle Identities Questions and Answers : Quiz 87

MCQ 431: 2cosαcosβ =

1. cos(α + β)+ cos(α - β)
2. cos(α + β)- cos(α - β)
3. sin(α + β)+ sin(α - β)
4. sin(α + β)- sin(α - β)

MCQ 432: X = asecθ, y = btanθ are parametric equations of

1. circle
2. parabola
3. ellipse
4. hyperbola

MCQ 433: Cos(α + β)-cos(α - β) =

1. 2sinαcosβ
2. 2cosαsinβ
3. 2cosαcosβ
4. −2sinαsinβ

MCQ 434: X/(x+a)(x-a) =

1. 1/2(x-a) + 1/2(x+a)
2. 1/2(x²-a) + 1/2(x+a)
3. 1/2(x²+a) + 1/2(x-a)
4. None of Above

MCQ 435: A sequence in which any term divided by its immediate previous term gives a constant is called

1. geometric sequences
2. arithmetic sequences
3. real sequence
4. complex sequences

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