Question

resolver un triangulo si a=2.3m, b =1.6m y c=4m; usando ley del coseno.

Answer 1

C²=a²+b²-2ab cosu
Cos u=(a²+b²-c²)/2ab
Cos u=(5.29+2.56-16)/2*2.3*1.6
=-815/736=-1.1073