# Double Angle Identities Quiz Questions 155 Tests pdf Download

Learn quiz on double angle identities, 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 questions as cos(α + β)cos(α - β) =, answer key with choices as cos^{2}α-sin^{2}β, sin^{2}α-cos^{2}β, 2cosα and 2sinα to test study skills. For eLearning, study online double angle identities multiple choice questions based quiz questions and answers.

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

Double Angle Identities Quiz

MCQ. Cos(α + β)cos(α - β) =

- cos
^{2}α-sin^{2}β - sin
^{2}α-cos^{2}β - 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 2x^{2} - 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