TS EAMCET 04 May 2019 Shift 1 Solved Paper

Let assume (h,k) be point on hyperbola,
x2−y2=8
Then
h2−k2=8
The asymptotes of the hyperbola h2−k2=8 are
x+y=0‌ and ‌x−y=0
The distance from the assumed point to the asymptotex+y=0
is,
d1=‌

h+k

√2

Similarly,
d2=‌

h−k

√2

This implies,
d1d2‌‌=‌

h2−k2

2

‌‌=‌

8

2

‌‌=4