TS EAMCET · Maths · Circle
If is the angle between the circles and then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Let S1:x2+y2-8x-12y+43=0 S2:x2+y2-2x-4y-4=0 If θ is the angle between circles x2+y2+2gx+2fy+c=0 and x2+y2+2g'x+2f'y+c'=0, then cosθ=c+c'-2gg'+ff'2g2+f2-cg'2+f'2-c' ⇒cosθ=43-4-24+1221+4+416+36-43 ⇒cosθ=718 ⇒secθ=187 Therefore,…
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