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Form the differential equation of the fa...

Form the differential equation of the family of circles in the second quadrant and touching the coordinate axes.

A

Each member of this family is equally inclined with coordinate axes.

B

`sin^2(alpha)+sin^2(gamma)+sin^2(beta)=1`

C

`cos^2(alpha)+cos^2(beta)+cos^2(gamma)=2`

D

For c=3 area of the `trianglePQR is 3sqrt(3)` sq. units.

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