Question

Find the coordinates of the points on Y-axis which are at a distance of 5√2 units

from the point (5,8).​

Answer 1

I am sure you are asking this question from ICSE class 9 specimen paper as we have Maths exam tomorrow. Let's answer

Step-by-step explanation:

Let point A(0,y)

B(5,8)

AB=√(5-0)²+(8-y)²

5√2=√5²-(8-y)²

50=25+64+y²-16y

SQUARING BOTH SIDES

y²-16y+39=0

y²-13y-3y+39=0

(y-13)(y-3)

y=13 or y=3