First slide

Definition of a circle

Question

If the points A (2, 5) and B are symmetrical about the tangent to the circle $x^{2} + y^{2} - 4 x + 4 y = 0$ at the origin then the coordinates of B, are

Moderate

A

(5, - 2)
B

(1, 5)
C

(5, 2)
D

none of these

Solution

The equation of the tangent to the given circle the origin is $y = x$ . Image of the point $A (2, 5) in y = x is (5, 2$ Thus, the coordinates of B are ( 5, 2).

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App