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butalik [34]
3 years ago
14

Find y. (geometry) thank you in advance

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
3 0

Answer:

59°

Step-by-step explanation:

γ=cos^-1(18^2+22^2-20^2)/2*18*22)=58.99242°

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