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College Math Practice Test 137

# Double Angle Identities Quiz Questions and Answers PDF - 137

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The Double Angle Identities Quiz Questions and Answers PDF, Double Angle Identities Quiz with Answers PDF Download e-Book Ch. 2-137 to prepare College Math Practice Tests. Solve Double Angle Identities MCQ with answers PDF, Double Angle Identities Multiple Choice Questions (MCQ Quiz) for GRE prep classes. The Double Angle Identities Quiz App Download: Free learning app for double angle identities, trigonometric ratios of allied angles, triple angle identities, nature of roots of quadratic equation, period of trigonometric functions test prep for best online ACT prep class.

The Quiz: Cosα-sinα/cosα+sinα "Double Angle Identities" App Download (Free) with answers: Sec2α-tan2α; Sec2α+tan2α; Csc2α-cot2α; Csc2α+cot2α; for GRE prep classes. Learn Double Angle Identities Questions and Answers, Apple eBook to download free sample to study distance learning courses.

## Double Angle Identities Questions and Answers : Quiz 137

MCQ 681:

Cosα-sinα/cosα+sinα

1. sec2α+tan2α
2. sec2α-tan2α
3. csc2α-cot2α
4. csc2α+cot2α
MCQ 682:

Tan(-α) =

1. −tanα
2. tanα
3. cotα
4. cotα
MCQ 683:

Sin9α =

1. 4cos³3α-3cos3α
2. 3cos³3α-4cos3α
3. 3sin3α-4sin³3α
4. 4sin3α-3sin³3α
MCQ 684:

The discriminant of quadratic equation ax² +bx +c = 0 is

1. b² + 4ac
2. 4ac-b²
3. b² - 4ac
4. a² - 4bc
MCQ 685:

The period of 3cot(x/3) is

1. π