Question

Find the co-ordinates of a point A, where AB is the diameter of a
circle whose center is (2, -3) and B is (1,4)​

Answer 1

Answer:

so O which is the mid point of AB

so (x+1)/2=2

x+1=4

x=3

same way

(y+4)/2=-3

y+4=-6

y=-6-4=-10

so A(3,-10)

Answer 2

∣z−i∣=5

let z=x+iy

⇒∣x+iy−i∣=5

⇒∣x+i(y−1)∣ 2 =5 2

⇒x 2 +(y−1) 2 =5 2

radius = 5

centre (0,i)

$\huge\underline\mathcal\purple{BTS \: EXO}$