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# Double Angle Identities Multiple Choice Questions PDF p. 155

Double Angle Identities multiple choice questions and answers, double angle identities quiz answers PDF 155 to learn College Math course for college certification. Learn Double Angle Identities MCQ trivia questions, double angle identities Multiple Choice Questions (MCQ) for online college degrees. Double Angle Identities Interview Questions PDF: de moivres theorem, online math learning, nature of roots of quadratic equation, operation on three sets, double angle identities test prep for SAT practice test.

"Cos(α + β)cos(α - β) =" MCQ PDF with choices sin²α-cos²β, cos²α-sin²β, 2cosα, and 2sinα for ACT test. Solve double angle identities questions and answers to improve problem solving skills for SAT test.

## Double Angle Identities Questions and Answers MCQs

MCQ: Cos(α + β)cos(α - β) =

cos²α-sin²β
sin²α-cos²β
2cosα
2sinα

MCQ: A ∪ ( B ∩ C ) =

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

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

equal
imaginary
irrational
real and unequal

MCQ: A radian is the measure of the 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

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