Given a = {a | 360K < a < 150 + 360K, K ∈ Z}, B = {B | - 90 + 360K < B < 45 + 360K, K ∈ Z} to find a ∩ B a ∪ B
A={a|360k<a<150+360k,k∈Z},
B={b|-90+360k<b<45+360k,k∈Z}
∴A∩B={a|k360º<a<45º+k360º,k∈Z}
AUB=={a|-90º+k360º<a<150º+k360º,k∈Z}
Try to submit it, but it was deleted tonight
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