Errrmmm.... Where is the expression?
Use the identity P(A ∪ B) = P(A)+P(B)-P(A ∩ B)
P(A)=0.50
P(B)=0.60
P(A ∪ B) = 0.30
=>
P(A ∪ B) = P(A)+P(B)-P(A ∩ B)
=(0.50+0.60)-0.30
=0.80
Hello,
Let's calculate ∠O:
∠O=180-2*56=68+
x=90-68=22°
Answer:
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