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College Math Practice Test 155

# Double Angle Identities Quiz Questions with Answers PDF - 155

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The e-Book Double Angle Identities Quiz Questions and Answers, double angle identities Quiz MCQs PDF, chapter 2-155 to study online math degree programs. Study Double Angle Identities MCQ Questions PDF, double angle identities Multiple Choice Questions (MCQ Quiz) for online college degrees. The Double Angle Identities Trivia App Download: Free educational app for double angle identities, operation on three sets, nature of roots of quadratic equation, online math learning, de moivres theorem test prep for SAT practice test.

The Quiz Cos(α + β)cos(α - β) =: sin²α-cos²β, cos²α-sin²β, 2cosα and 2sinα with "Double Angle Identities" App Download (Android & iOS) Free for ACT test. Practice double angle identities questions and answers, Google eBook to download free sample for SAT test.

## Double Angle Identities Trivia Questions : Quiz 155

MCQ 771: Cos(α + β)cos(α - β) =

A) cos²α-sin²β
B) sin²α-cos²β
C) 2cosα
D) 2sinα

MCQ 772: A ∪ ( B ∩ C ) =

A) ( A ∪ C) ∪ ( A ∪ C)
B) (B ∩ B) ∩ ( A ∩ C)
C) (A ∪ B) ∩ C
D) ( A ∪ B ) ∩ (A ∪ C)

MCQ 773: The roots of the quadratic equation 2x² - 5x + 3 = 0 are

A) equal
B) imaginary
C) irrational
D) real and unequal

MCQ 774: A radian is the measure of the central angle of an arc of a circle whose length is equal to the

A) half of radius of the circle
B) diameter of circle
D) one-third of radius of the circle

MCQ 775: For all n belong to Z, ( cosθ + ι sinθ )n

A) csc nθ + ι sin nθ
B) tannθ +ι cotnθ
C) cosnθ + ι sinnθ
D) cosnθ - ι sinnθ

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