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The answer to the problem
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The answer to the problem

The answer to the problem-example-1
User Jeff Sherlock
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1 Answer

7 votes
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.

User Drf
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