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Fourth Root of Unity Quiz PDF: Questions and Answers - 39

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Fourth Root of Unity Questions and Answers PDF Download: Quiz 39

MCQ 191: ω29 + ω28 + 1 =

A) 0
B) 1
C) 2
D) 3

MCQ 192: In 30 minutes, the hours hand of a clock turns through

A) π/6 radians
B) π/12 radians
C) π/24 radians
D) π radians

MCQ 193: For any non- singular matrix A, A-1 =

A) |A|adj A
B) 1 /|A|adj A
C) adj A⁄|A|
D) None of Above

MCQ 194: If A and H are arithmetic and harmonic mean between 2 and 3, then A + H =

A) 49/20
B) 49/10
C) 49/5
D) 32/4

MCQ 195: Cos540° =

A) −1/√(2)
B) 1/√(2)
C) 3/√(2)
D) 0

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8th Grade Math App (Android & iOS)