# Double Angle Identities Quiz Questions and Answers Online 155 pdf eBooks Download

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

Free double angle identities worksheet has multiple choice quiz question as cos(α + β)cos(α - β) =, answer key with choices as cos²α-sin²β, sin²α-cos²β, 2cosα and 2sinα problem solving to test study skills. For viva learning help and jobs' interview preparation tips, study online double angle identities multiple choice questions based quiz question and answers.

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

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 circle
- diameter of circle
- radius of circle
- one-third of radius of 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