Let U = {x : x∈ N and x ≤ 8}, A = {x: 5 < x < 50}and B = {x: x is prime},then verify:
[De Morgan’s Law]
a. (A ∪ B)' = A' intersection B'
b. (A ∩ B)' = A'uB'
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AW:
Example 2.1 Calculate the angle of
(a) 1° (degree) (b) l' (minute of arc or arcmin)
and (c) 1"(second of arc or arc second) in
radians. Use 360°=270 rad, 10=60' and
ve
1' = 60
au
ser (a) We have 360°= 2n rad
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