Question

determine os valores de x,y,w,z em cada caso

Answer 1

a)cos 30°=16/x
√3/2=16/x
√3x=32
x=32/√3.√3/√3
x=32√3/3

b)sen y=13/26
y=0,5

c)sen 60°=w/18
√3/2=w/18
2w=18√3
w=18√3/2
w=9√3

d)cos 45°=20/z
√2/2=20/z
√2z=40
z=40/√2.√2/√2
z=40√2/2