Find the equation of the tangent at A to the circle (x-a)^2 +(y-b)^2=r^2 where radius through a makes an angle - Maths - Straight Lines

Question

Find the equation of the tangent at A to the circle (x-a)^2
+(y-b)^2=r^2 where radius through a makes an angle alpha with the X
axis ( ans is (x-a)cos alpha + (y-b)sin alpha= +-r

Aarushi Mishra · Accepted Answer

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Find the equation of the tangent at A to the circle (x-a)^2 +(y-b)^2=r^2 where radius through a makes an angle alpha with the X axis . ( ans is (x-a)cos alpha + (y-b)sin alpha= +-r