tan-1\(\frac{4}{3}\)
tan-1(1)
90\(^{\circ}\)
tan-1\(\frac{3}{4}\)
The angle of intersection of the curves y = x2 and x = y2 at (1, 1) is

The portion of the line \( 4x + 5y = 20 \) in the first quadrant is trisected by the lines \( L_1 \) and \( L_2 \) passing through the origin. The tangent of an angle between the lines \( L_1 \) and \( L_2 \) is:

