Question

se sec = $\sqrt{2}$, qual e o valor de cotg x?

Answer 1

sec x = 1/cosx = √2

cosx= 1/√2 = √2/2   ==== > x=45º, então senx = √2/2  
usando sen²x+cos²x = 1 vc tbm descobre o seno

cotgx=cosx/senx =  (√2/2) * (2/√2) = 1