Two circles share the same center. Chords AB and AC of the larger circle are tangent to the smaller circle. The angle ∠BAC is 60°. a) Find the radius of the larger circle if the radius of the smaller circle is 4 cm. b) Find the radius of the smaller circle if the radius of the larger circle is 6 cm.
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →