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If theta1, theta2, theta3 are respective...

If `theta_1, theta_2, theta_3` are respectively the angles by which the coordinate axes are to be rotated to eliminate the xy term from the following equations, then the descending order of these angles is
`A_1 = 3x^2+5xy+3y^2+2x+3y+4=0`
`A_2= 5x^2+2sqrt(3) xy+3y^2+6 =0`
`A_3 =4x^2+sqrt(3) xy+5y^2-4 =0`

A

`theta_1, theta_2 , theta_3`

B

`theta_3,theta_1,theta_2`

C

`theta_2,theta_1,theta_3`

D

`theta_3,theta_2,theta_1`

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The correct Answer is:
B
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