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OpenSessame
 2 years ago
CD is tangent to circle O at D. Find the diameter of the circle for BC = 13 and DC = 30. Round to the nearest tenth. (The diagram is not drawn to scale.)
OpenSessame
 2 years ago
CD is tangent to circle O at D. Find the diameter of the circle for BC = 13 and DC = 30. Round to the nearest tenth. (The diagram is not drawn to scale.)

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Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1The theorem you need to solve this problem is attached below.

OpenSessame
 2 years ago
Best ResponseYou've already chosen the best response.0I see that but i really dont get how to do it.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1See if you can solve the equation. 30² = 13( 13 + x) where x = AB, the diameter of the circle.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1On the equation you wrote, you forgot to square the tangent length.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.156.231 for x = AB which is the diameter is what I got. Same as your answer.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1Round to the nearest tenth.

OpenSessame
 2 years ago
Best ResponseYou've already chosen the best response.0Okay thanks! Can you help me out with some other ones too please?

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1What is 56.231 to the nearest tenth?

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1Close this thread and post your next question in a new thread.

OpenSessame
 2 years ago
Best ResponseYou've already chosen the best response.0Circle O and circle P are congruent. What can you conclude from the diagram? https://study.ashworthcollege.edu/access/content/group/45b8c516100846d7aa1dbb9b62c786ff/geometry_exam_12_files/mc0011.jpg

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1I think you need the theorem that begins: In the same circle or in congruent circles, congruent central angles have ________________________________? That would be, I think, what you could conclude. But, first look up that theorem.
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