If operator 'a' = 1 ∠120° then (1 - a²) = – McqOptions

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1.	If operator 'a' = 1 ∠120° then (1 - a²) =
A.	1 ∠ - 30°
B.	1 ∠ 30°
C.	1 ∠ - 60°
D.	1 ∠60°
Answer» B. 1 ∠ 30°

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