Given that,

l₁‖ l₂

Let transversal P and Q cuts them

∠1 = 37^o

∠4 = 58^o

∠5 = x^o

∠1 = ∠2 = 37^o (Corresponding angles) (i)

∠2 = ∠3 (Vertically opposite angle)

∠3 = 37^o

∠3 + ∠4 + ∠5 = 180^o (Linear pair)

37^o + 58^o + x = 180^o

x = 85^o