JEE MATHEMATICS MCQ: CIRCLES

1 Easy

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Analyzing +4 | -1

If the straight line

a x+b y=2 ; a, b \neq 0

touches the circle

x^2+y^2-2 x=3

and is normal to circle

x^2+y^2-4 y=6

, then the values of

a

and

b

are

View answer and explanation

Correct option: C

a=\frac{-4}{3}, b=1

Option C (

a=\frac{{-4}}{{3}}, b=1

) is correct because by using the conditions of tangency and normality, we can solve for a and b.

More Questions from CIRCLES

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{\left( {{\alpha ^2}{x^2} - 2\alpha \mathrm{ }x + 1} \right)^{51}},

x

\left( {\alpha ,2{\alpha ^2}} \right)

{x^2} + {y^2} = 4,

{x^2} + {y^2} - 2x + 4y - 4 = 0

{x^2} + {y^2} = {a^2}

\left( {{x_1},{y_1}} \right)

\quad \alpha, \beta

\gamma

P, Q

x^2+y^2=1

A

(-1,0)

A P, A Q

A R

G P

\cos \alpha / 2, \cos \beta / 2

\cos \gamma / 2

x+y=6

x+2 y=4

x+y=5

x-y=1

9 \pi