From a point A 10 cm from a plane P a perpendicular line AC is drawn passing through a circle with center C and radius of 8cm in the plane. At any point B on this circle, a tangent BD is drawn 18cm in lenght. find the distance from A to D

Question

cwrw238 · Answer

you need to find the distance of the center of circle to end of the tangent.
AD is the hypotenuse of the right angled triangle ACD  
there is a circle tangent theorem which you can use to find CD
which I'll have to check out.

anonymous · Answer

oh ok. can you pls send a picture? because I dont really get it. thanks though

cwrw238 · Answer

its a bit difficult to draw as its 3 dimensional  here goes:-

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