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about to only mathematics

A

`pi//2`

B

`pi//3`

C

`pi//4`

D

`pi//6`

Text Solution

Verified by Experts

The correct Answer is:
C
Let O be the centre of the circle. Then, `angle(QOR)=90^(@)`
Hence, `angleQOP=(pi)/(4)`.
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OBJECTIVE RD SHARMA ENGLISH-CIRCLES-Section I - Solved Mcqs
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  2. A circle touches both the coordinate axes and the line x-y=sqrt(2)a, a...

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  3. about to only mathematics

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  4. If AB is the intercept of the tangent to the circle x^2 +y^2=r^2 betwe...

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  5. The locus of the foot of the normal drawn from any point P(alpha, beta...

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  6. The chords of contact of the pair of tangents drawn from each point on...

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  7. The equation of a circle C1 is x^2+y^2-4x-2y-11=0 A circleC2 of radius...

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  8. If a chord of contact of tangents drawn from a point P with respect to...

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  9. If (a, 0) is a point on a diameter of the circle x^(2)+y^(2)=4, then t...

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  10. If the polar of a point ( p,q) with respect to the circle x^(2)+ y^(2)...

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  11. The locus of the mid-points of the chords of the circle of lines radiÃ...

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  12. If two circles and a(x^2 +y^2)+bx + cy =0 and p(x^2+y^2)+qx+ry= 0 touc...

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  13. The circles x^(2)+y^(2)+2x-2y+1=0 and x^(2)+y^(2)-2x-2y+1=0 touch each...

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  14. The point of intersection of the common chords of three circles descri...

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  15. If P and Q are the points of intersection of the circles x^(2)+y^(2)+3...

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  16. If the chord of contact of tangents from a point P to a given circle p...

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  17. If one of the circles x^2+y^2+2ax+c=0 and x^2+y^2+2bx+c=0 lies within ...

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  18. The chord of contact of tangents from a point P to a circle passes thr...

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  19. The locus of the centre of circle which cuts off an intercept of const...

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  20. Let PQ and RS be tangents at the extremities of the diameter PR of a c...

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