wersadf
wersadf
26-08-2017
Mathematics
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The answer to the problem
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caylus
caylus
26-08-2017
Hello,
Using Al'Kashi s' theorem (théorème de Pythagore généralisé), we have:
27.32²=17.21²+a²-2*17.21*a*cos(27°)
==> a²+4.194280000... a-450.1983=0
Positive solution is a=19.2239153057...
Answer D.
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