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Nookie1986 [14]
3 years ago
11

PLEASE ANSWER + BRAINLIEST!!!

Mathematics
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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<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1000%7D%20%2B%20%5Csqrt%5B3%5D%7B0.027%7D%20-%20%5Csqrt%5B3%5D%7B125%7D" id="
e-lub [12.9K]
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10 + 3 square root 27/1000 - 5

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53/10


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