Any audio that you hear on an AM receiver is from the two sidebands. When the radio transmitter you are tuned to is not transmitting any sound, you can still hear from the speaker and see on your S meter that a signal is present due to the background noise being quieter than either side of that frequency.
This feature is not available right now. Please try again later. How to calculate Perpendicular distance between a point and a line The perpendicular distance (d) of a line Ax + By+ C = 0 from a point (x1 ,y1) is given by d = | Ax1 + by1 + c|/ root (A^2 + B^2) complete explanation of formula and solved example. 1  Education. 2  Standard YouTube License.
In fact, the product of the slopes of any pair of perpendicular lines is -1. So if we have any two perpendicular lines, we can call their slopes m 1 and m 2 and write this fact as an equation: We can use this equation to check whether or not two lines are perpendicular without trying to measure the angle between them.