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:
A statement is a sentence that is either true or false, but not both true and false simultaneously.
Since one of the given statements i.e. a is true, therefore, a or b is true.