# Double Angle Identities Quiz Questions and Answers 155 PDF Book Download

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## Quiz on Double Angle Identities Worksheet 155Quiz Book Download

Double Angle Identities Quiz

MCQ: Cos(α + β)cos(α - β) =

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

A

Operation on Three Sets Quiz

MCQ: A ∪ ( B ∩ C ) =

- ( A ∪ C) ∪ ( A ∪ C)
- (B ∩ B) ∩ ( A ∩ C)
- (A ∪ B) ∩ C
- ( A ∪ B ) ∩ (A ∪ C)

D

Nature of roots of quadratic equation Quiz

MCQ: Roots of quadratic equation 2x² - 5x + 3 = 0 are

- equal
- imaginary
- irrational
- real and unequal

D

Online Math Learning Quiz

MCQ: A radian is measure of central angle of an arc of a circle whose length is equal to the

- half of radius of the circle
- diameter of circle
- radius of the circle
- one-third of radius of the circle

C

De Moivres Theorem Quiz

MCQ: For all n belong to Z, ( cosθ + ι sinθ )n

- csc nθ + ι sin nθ
- tannθ +ι cotnθ
- cosnθ + ι sinnθ
- cosnθ - ι sinnθ

C