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The *Double Angle Identities Multiple Choice Questions (MCQ Quiz) with Answers PDF*, Double Angle Identities MCQ PDF e-Book download to practice College Math Tests. Learn Double Angle Identities Multiple Choice Questions and Answers (MCQs), Double Angle Identities quiz answers PDF to study online training courses. The *Double Angle Identities MCQ App* Download: Free learning app for double angle identities test prep for online colleges for teaching.

The MCQ: *1+cos2α =;* "Double Angle Identities" App Download (Free) with answers: 2sinα; 2cosα; 2secα; 2cos²α; to study online training courses. Practice Double Angle Identities Quiz Questions, download Google eBook (Free Sample) for GRE test prep classes.

MCQ 1:

**cot(α + β) =**

- cotαcotβ-1/cotα+cotβ
- cotαcotβ+1/cotα-cotβ
- cotαcotβ+1/cotα+cotβ
- None of Above

a

MCQ 2:

**1+cos2α =**

- 2sinα
- 2cosα
- 2secα
- 2cos²α

d

MCQ 3:

**cos(α + β)cos(α - β) =**

- cos²α-sin²β
- sin²α-cos²β
- 2cosα
- 2sinα

b

MCQ 4:

**cosecθ+2cosec2θ/secθ =**

- tanα/2
- −tanα/2
- −cotα/2
- cotα/2

b

MCQ 5:

**cos2α =**

- 1+ tan²α/1 - tan²
- 2tanα/1 - tan²
- 1- tan²α/1 + tan²
- None of Above

c

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