(pi/4, f(pi/4))

T246

f(x) = (sqrt(2) * cos(x)) - x
P: (π / 4, f(π / 4))
g = Tangent(P, f)
h = OrthogonalLine(P, g)
teksti2 = LaTeX(h, true, true)
teksti3 = LaTeX(f, true, true)