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Study bachelor degree and masters degree in math questions, double angle identities online course has multiple choice question (MCQs): cos(α + β)cos(α - β) = with options cos²α-sin²β, sin²α-cos²β, 2cosα and 2sinα for online e-learning for government jobs, highest paying jobs and teaching jobs preparation. Learn double angle identities quiz questions with problem solving skills assessment test.

Double Angle Identities Quiz

MCQ: Cos(α + β)cos(α - β) =

1. cos²α-sin²β
2. sin²α-cos²β
3. 2cosα
4. 2sinα

A

Operation on Three Sets Quiz

MCQ: A ∪ ( B ∩ C ) =

1. ( A ∪ C) ∪ ( A ∪ C)
2. (B ∩ B) ∩ ( A ∩ C)
3. (A ∪ B) ∩ C
4. ( A ∪ B ) ∩ (A ∪ C)

D

Nature of roots of quadratic equation Quiz

MCQ: Roots of quadratic equation 2x² - 5x + 3 = 0 are

1. equal
2. imaginary
3. irrational
4. 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

1. half of radius of the circle
2. diameter of circle
4. one-third of radius of the circle

C

De Moivres Theorem Quiz

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

1. csc nθ + ι sin nθ
2. tannθ +ι cotnθ
3. cosnθ + ι sinnθ
4. cosnθ - ι sinnθ

C