Question

calcule o valor de x em cada caso:

Answer 1

Use a lei dos senos

a/senA = b/senB

a) x/Sen45 = 3√2/Sen60

x/√2/2 = 3√2/√3/2
x/√2 = 3√2/√3
√3x = √2.3√2
x = 3.2/√3 -> 6/√3 = 6√3/3 = 2√3

b) x/sen60 = 5√2/sen45
x/√3/2 = 5√2/√2/2
x/√3 = 5√2/√2
√2.x = 5√2.√3
x = 5√3

c)
x/sen30 = 8/sen45
x/1/2 = 8/√2/2
x/1 = 8/√2
x = 8√2/2 -> 4√2