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Nookie1986
[14]
3 years ago
11
PLEASE ANSWER + BRAINLIEST!!!
Mathematics
Answer
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1
answer:
quester
[9]
3 years ago
6
0
Use the Cosine Rule
q^2 = 20^2 + 30^2 - 2^20*30 cos 15
= 140.89
so q = sqrt 140.89 = 11.9 (answer)
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