Wednesday

January 28, 2015

January 28, 2015

Posted by **please help me out!!! please** on Monday, February 11, 2013 at 10:53am.

- geometry -
**Reiny**, Monday, February 11, 2013 at 11:27amIn this case the secant - tangent theorem says

PA^2 = PD x PC , where D in on the extension of PO as it hits the circle , making CD a diameter

Let the diameter be 2x , (radius = x)

(14)(2x+14) = 42^2

28x + 196 = 1764

28x = 1568

x = 56

**Answer this Question**

**Related Questions**

Math - Γ 1 is a circle with center O 1 and radius R 1 , Γ 2 is a ...

math - Let AB be the diameter of circle Γ1. In the interior of Γ1, ...

Math - Let AB be the diameter of circle Γ1. In the interior of Γ1, ...

Maths - Given circle Γ and a point P outside of Γ, 2 lines l1 and l2 ...

heeeeeelp math - is a point outside of circle Γ. The tangent from P to &#...

math - Equilateral triangle ABC has a circumcircle Γ with center O and ...

mahts - Equilateral triangle ABC has a circumcircle Γ with center O and ...

circle geometry - Circles Γ1 and Γ2 intersect at 2 distinct points A ...

geometry - A point P is given outside of a circle Γ. A tangent from P to &#...

GEOMETRY......circle - Circles Γ1 and Γ2 intersect at 2 distinct ...