Question

Qual será o valor de x e y?​

Answer 1

Resposta:

Explicação passo a passo:

Cos 45o = CA/Hip .: cos 45o = x/20.(2)^1/2      cos 45o = (2)^2  / 2

                                  (2)^1/2 /2  = x / 20.(2)^1/2

x = ( (2)^1/2 /2)* (20.(2)^1/2) = (20. (2)^1/2.(2)^1/2)/2 = 20.2/2 = 20

sen 45o = CO/Hip .:  sen 45o = y / 20 (2)^1/2   e sen 45o = cos 45o = (2)^2  / 2

Logo y = 20 = x