Question

Find the angle of rotation of axes to remove xy term in the equation 7x^2+2 root over 3xy +9y^2 =0.​

Answer 1

Step-by-step explanation:

Hola !

Here,

a= 7 ; b =9 ; h = √ 3

Angle of rotation = ½tan -¹ (2h/a-b)

=½tan-¹(2√3/7-9)

=½tan-¹(-√3)

=½(2π/3)

=π/3

Thank you !

Answer 2

Step-by-step explanation:

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