8x-2y/x²-y²=4
please solve
Answers
Answered by
0
Answer:
x
2
+y
2
+8x−2y−9=0
C
1
=(−4,1) and r
1
=
4
2
+1
2
+9
=
26
x
2
+y
2
−2x+8y−7=0
C
2
≡(1,−4) and r
2
=
1
2
+4
2
+7
=
24
∴cos(180−θ)=
2r
1
r
2
r
1
2
+r
2
2
−(c
1
c
2
)
2
⇒−cosθ=
2
24
26
24+26−50
⇒cosθ=0
⇒θ=90
0
=
2
π
is the angle between the circles
Answered by
0
Answer
Correct option is
D
2
π
x
2
+y
2
+8x−2y−9=0
C
1
=(−4,1) and r
1
=
4
2
+1
2
+9
=
26
x
2
+y
2
−2x+8y−7=0
C
2
≡(1,−4) and r
2
=
1
2
+4
2
+7
=
24
∴cos(180−θ)=
2r
1
r
2
r
1
2
+r
2
2
−(c
1
c
2
)
2
⇒−cosθ=
2
24
26
24+26−50
⇒cosθ=0
⇒θ=90
0
=
2
π
is the angle between the circles
Hence, option D.
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