 Hello and welcome to the session. Today I am solving the problem given by find the distance between the points 0, 0 and 36, 15. Can you now find the distance between the two tones A and B discussed in section 7.2? So let's start the solution. We know that the distance between any two points Px1, y1 and Qx2, y2 is given by PQ is equal to under root of x2 minus x1 whole square plus y2 minus y1 whole square. In particular the distance of the point Pxy from the origin O00 is given by OP is equal to under root of x square plus y square. So this is the key idea behind this question. We will take the help of this key idea to solve the question. So let's start the solution with given points. Using the distance formula one point is origin and the other is point P3615 we have the distance OP is equal to 225 which is again equal to 10,520 and this is equal to 39. So the distance between the origin and the point P whose coordinates are 36 and 15 is 39. Distance between the two tones A and B in the section 7.2 is as follows. A tone is located coordinates are 00 and B whose coordinates are 3615 is given by since AB is equal to distance formula. So this is 36 square plus 15 square because one coordinate is origin here. So this is again equal to 1296 plus 225 which is equal to 521 which is equal to 39. The question is the distance between the points origin and 3615 is 39 and the distance between the points is 2 km. So I hope the question is clear to you. Mind and enjoy yourself.