# Double Angle Identities Quiz Questions and Answers 155 PDF Download

Learn double angle identities quiz, online college math test 155 for distance learning, online courses. Free math MCQs questions and answers to learn double angle identities MCQs with answers. Practice MCQs to test knowledge on double angle identities with answers, de moivres theorem, online math learning, nature of roots of quadratic equation, operation on three sets, double angle identities test for online math problems courses distance learning.

Free double angle identities online course worksheet has multiple choice quiz question: cos(α + β)cos(α - β) = with choices cos²α-sin²β, sin²α-cos²β, 2cosα and 2sinα for online e-learning for government jobs, highest paying jobs and teaching jobs preparation, study double angle identities multiple choice questions based quiz question and answers.

## Quiz on Double Angle Identities Worksheet 155 Quiz PDF 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