gabbylynn24
gabbylynn24
17-04-2017
Mathematics
contestada
law of cosine find m<B a=11 b=12 c=17
Respuesta :
wolf1728
wolf1728
17-04-2017
cos (B) = (a^2 + c^2 -b^2) / (2 * a * c)
cos (B) = (11^2 +17^2 -12^2) / (2 * 11 * 17)
cos (B) = (121 + 289 -144) / (374)
cos (B) = 266 / 374
cos (B) =
0.7112299465
Angle B =
44.665 degrees
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