To get the most from a direct box, your mixing board must have balanced mic and/or line inputs! (Note that some mixers offer both XLR and 1/4 balanced inputs -- check your manual.) Use a direct box if you are experiencing hum, buzz, or radio interference, or if your instrument's cable is longer than 20 feet.
When a transversal (any line that passes through two parallel lines) cuts two parallel lines then the angles that correspond to the similar positions (angles in the matching corners) with respect to either of the parallel lines and lie on the same side of the transversal are called the Corresponding angles.
The side opposite the angle Î¸ is the opposite side, and the other side, being next to the angle (but not being the hypotenuse) is the adjacent side. As you can see, the labels opposite and adjacent are relative to the angle in question. There are six ways to form ratios of the three sides of this triangle. The ratios in the left-hand table are the regular trig ratios; the ones in the right-hand table are their reciprocals (that is, the inverted fractions).