kiahtab13
kiahtab13
14-04-2018
Mathematics
contestada
Find the length of A? Anyone know?....
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Аноним
Аноним
14-04-2018
a² = b² + c² - 2bcCos A
a² = 11² + 13² - 2(11)(13)Cos(108)
a² = 378.38
a = √378.38
a = 19.45
Answer: 19.45
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