Question

please tell this fast it's urgent 2nd question ​

Answer 1

Answer:

A(4,k) and B(1,0)

using formula :- √(X²-X¹)²+(Y²-Y¹)²

5=√(1-4)²+(0-k)²

5=√3²+k²

5=√9+k²

squaring both side :

25=9+k²

25-9=k²

16=k²

4= k