tangent

the length of the tangent drawn from any point on circle x+y+2gx+2fy+β =0 to circle x+y+2gx+2fy+μ=0 then
(a)√β-μ (b)√xμ-β (c)√xμ+β ( d)none

4 Answers

1357
Manish Shankar ·

The circles are concentric
so length of tangent is half of the chord to the bigger circle

1
preeti kochar ·

ANSWER FROM ABOVE OPTIONS PLZ AND EXPLAIN IT

1357
Manish Shankar ·

r2 (outside radius) =√(g2+f2-β)
r1 (inside radius) =√(g2+f2-μ)

l=√(r22-r12)=√(μ-β)

so answer is none

62
Lokesh Verma ·

From this figure i hope u will be able to get the answer?

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