AP EAMCET · Maths · Straight Lines
The transformed equation of \(x^2+y^2=r^2\) when the axes are rotated through an angle \(36^{\circ}\) is
- A \(\sqrt{5} X^2-4 X Y+Y^2=r^2\)
- B \(X^2+2 X Y-\sqrt{5} Y^2=r^2\)
- C \(X^2-Y^2=r^2\)
- D \(X^2+Y^2=r^2\)
Answer & Solution
Correct Answer
(D) \(X^2+Y^2=r^2\)
Step-by-step Solution
Detailed explanation
Given equation is \(x^2+y^2=r^2\). After rotation…
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