Question

Num triangulo ABC,são dados A= 45* , B=30* e a+b=√2+1.Calcule o valor de a.

Answer 1

a/sen A = b/sen B
a/sen 45 = b/sen 30
a/ (\/2/2) = b/ (1/2)
a/2 = b\/2/2
a = b\/2
a+b = \/2+1
b\/2+b = \/2+1
b(\/2+1) = \/2+1
b = 1
a = b\/2
a = 1*\/2
a = \/2